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NARRATOR:
From Earth to space.
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00:00:04,271 --> 00:00:07,973
There's no tougher 50 miles
to cross.
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00:00:08,042 --> 00:00:11,577
Fewer than 600 people have ever
traveled it.
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00:00:11,645 --> 00:00:13,479
But that number...
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00:00:13,547 --> 00:00:15,647
MAN:
Liftoff--
the Falcon 9 takes flight.
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00:00:15,716 --> 00:00:17,349
NARRATOR:
.. a whole lot bigger...
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00:00:17,418 --> 00:00:20,753
JOHN LOGSDON:
Competition will drive
the prices down.
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And we can enter a space age,
a space 2.0.
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00:00:24,458 --> 00:00:28,360
NARRATOR:
...Powered by entrepreneurs
with bold, new ideas.
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00:00:28,429 --> 00:00:31,163
JOHN GARVEY:
Landing on a pillar of fire,
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00:00:31,232 --> 00:00:32,264
that last five feet can be
critical.
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00:00:32,333 --> 00:00:34,266
TIM FERNHOLZ:
Elon Musk set himself up
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to do something
that no one else says he can do.
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00:00:36,404 --> 00:00:38,203
If he delivers,
it might change the world.
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00:00:38,272 --> 00:00:42,741
NARRATOR:
...And NASA daring to dream big
once again.
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We're working
on the next heavy-lift rocket
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00:00:44,845 --> 00:00:47,613
that will take us farther
than we've ever gone before.
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JASON KALIRAI:
It's giving the nation
what it wants
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00:00:49,250 --> 00:00:52,885
in a very exciting,
next-generation space program.
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NARRATOR:
Space--
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it's never been closer
for humans and machines.
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00:00:59,193 --> 00:01:01,226
It's the "Rise of the Rockets,"
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00:01:01,295 --> 00:01:04,696
lifting off right now,
on "NOVA."
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00:01:04,765 --> 00:01:06,065
(loud bang)
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♪ ♪
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MAN (on speakers):
T minus one minute 35 seconds
on the Apollo mission,
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the flight to land
the first men on the moon.
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NARRATOR:
Kennedy Space Center,
Cape Canaveral, Florida.
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Launch Complex 39.
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MAN:
T minus 17.
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Final guidance released.
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NARRATOR:
From here,
every Saturn V Apollo mission
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and every space shuttle
lifted off.
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MAN:
Liftoff.
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Liftoff on Apollo 11.
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♪ ♪
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NARRATOR:
But after the final
space shuttle landing in 2011,
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NASA tore down
its Pad 39 launch gantries.
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00:01:53,080 --> 00:01:55,414
And since then,
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no American astronaut has flown
into orbit from U.S. soil.
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♪ ♪
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LOGSDON:
The one hole in U.S. space
capability
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right now is the ability
to transport humans
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into orbit or beyond.
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FERNHOLZ:
The U.S. has spent
more than $100 billion
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building and operating
the space station,
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and we can't even get there
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00:02:18,672 --> 00:02:21,573
unless we pay, and overpay,
the Russians to do it.
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♪ ♪
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It's not where we want to be
as a country,
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it's not where we want to be
as an agency.
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♪ ♪
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00:02:31,552 --> 00:02:36,455
NARRATOR:
But now Launch Complex 39 is
back in business,
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rebuilt with the goal
of flying astronauts once more.
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CROWD:
Three, two, one.
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NARRATOR:
And this time,
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the rockets are not only
NASA-owned and operated.
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Private company SpaceX is
already launching
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00:02:57,912 --> 00:02:58,877
its Falcon rockets,
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00:02:58,946 --> 00:03:00,879
ferrying supplies
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to the
International Space Station.
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(crowd cheering)
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Eventually,
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they hope to become
a major provider
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of human flights
to the station as well.
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And SpaceX isn't alone.
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KALIRAI:
A number of private companies
have stepped up
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and started providing
economical, reusable,
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recyclable launch capabilities
to deliver to space.
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(rocket roaring)
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♪ ♪
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NARRATOR:
But what about NASA?
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♪ ♪
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They're focusing
on pure exploration,
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with a new rocket to take humans
into deep space.
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00:03:38,919 --> 00:03:40,886
We're working on the next
heavy-lift rocket
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that will take us farther
than we've ever gone before.
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It will be the most powerful
rocket ever built.
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♪ ♪
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WOMAN:
The landing burn has started.
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(radio chatter, crowd cheering)
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NARRATOR:
At the same time,
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the audacious
technical achievement
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of SpaceX's reusable rocket
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00:04:01,342 --> 00:04:04,076
and their stunts,
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00:04:04,144 --> 00:04:08,380
like launching a car and dummy
driver out of earth orbit,
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have ignited
new public enthusiasm.
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If you believe the hype,
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00:04:13,587 --> 00:04:17,889
then we're on the brink
of a new era of space flight.
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But great uncertainties
lie ahead.
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00:04:21,762 --> 00:04:23,295
The demand for seats remains
tiny,
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00:04:23,364 --> 00:04:26,498
with only governments and
a handful of private citizens
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willing to pay
for an expensive ride to space.
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So will this lead to a
renaissance in space travel?
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Or fizzle out...
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nothing more
than a flash in the pan
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00:04:38,646 --> 00:04:43,615
that fails to take the
next giant leap for humankind?
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♪ ♪
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(helicopter rotors droning)
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00:04:50,124 --> 00:04:51,490
MAN:
Liftoff--
the Falcon 9 takes flight
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with the Dragon spacecraft
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destined for the one-of-a-kind
laboratory in microgravity--
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the International Space Station.
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NARRATOR:
We're in the midst
of a revolution;
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00:05:04,805 --> 00:05:06,471
a surge of commercial rocketry
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00:05:06,540 --> 00:05:09,308
that could make space
more accessible
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00:05:09,376 --> 00:05:12,711
and usher in a new chapter
of exploration.
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00:05:12,780 --> 00:05:14,279
MAN:
And liftoff.
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NARRATOR:
It's a revolution
that was started by NASA.
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In 2005, the agency decided
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00:05:21,922 --> 00:05:24,389
to commercialize the task
of flying cargo and crew
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to the International
Space Station,
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00:05:27,761 --> 00:05:31,330
freeing NASA to take on
bigger challenges.
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KALIRAI:
It allows NASA to focus
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00:05:32,800 --> 00:05:35,734
on bolder expeditions
for deeper space exploration,
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00:05:35,803 --> 00:05:39,304
putting human beings
on Mars and other worlds;
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00:05:39,373 --> 00:05:40,739
pushing beyond the envelope
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00:05:40,808 --> 00:05:43,041
and giving the nation
what it wants
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00:05:43,110 --> 00:05:46,678
in a very exciting,
next-generation space program.
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♪ ♪
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NARRATOR:
NASA's next-generation
space program
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00:05:54,121 --> 00:05:56,521
calls for a big, new rocket,
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00:05:56,590 --> 00:05:59,958
capable of carrying humans
beyond earth orbit once again--
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00:06:00,027 --> 00:06:02,761
to the moon or even Mars.
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00:06:02,830 --> 00:06:06,298
It's a return to NASA's roots.
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00:06:06,367 --> 00:06:10,635
LOGSDON:
NASA is recreating
a 21st-century
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version of the Saturn V
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00:06:12,840 --> 00:06:15,040
as an exploration vehicle,
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00:06:15,109 --> 00:06:17,476
a heavy-lift vehicle
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00:06:17,544 --> 00:06:21,880
intended to enable the
resumption of human exploration
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00:06:21,949 --> 00:06:24,850
beyond low Earth orbit.
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00:06:24,918 --> 00:06:27,753
LYLES:
We're developing
the Space Launch System
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to carry crew and heavy cargo,
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00:06:30,624 --> 00:06:34,192
first to the moon
or in near-lunar orbit
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00:06:34,261 --> 00:06:37,162
and eventually to Mars
and, and the outer planets.
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(machinery humming)
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00:06:38,766 --> 00:06:41,900
NARRATOR:
Already eight years
in development,
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00:06:41,969 --> 00:06:46,004
NASA's Space Launch System--
or SLS, as it's known--
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00:06:46,073 --> 00:06:49,975
is designed to carry 50 tons
of spacecraft and human cargo
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00:06:50,043 --> 00:06:52,377
beyond Earth orbit.
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00:06:52,446 --> 00:06:54,546
♪ ♪
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JODY SINGER:
It will be able
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00:06:56,150 --> 00:07:00,051
to take the large systems that
we need to land to an outpost,
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00:07:00,120 --> 00:07:01,420
to do the exploration
in deep space,
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00:07:01,488 --> 00:07:06,024
and to deliver payload
and humans necessary to do
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00:07:06,093 --> 00:07:08,894
the research on the moon.
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00:07:08,962 --> 00:07:10,362
♪ ♪
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00:07:10,431 --> 00:07:14,599
NARRATOR:
If all goes well,
in the early 2020s,
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NASA's new rocket will send
a human-rated spacecraft
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00:07:18,038 --> 00:07:19,604
around the moon--
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00:07:19,673 --> 00:07:21,807
the first since the days
of Apollo.
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00:07:23,076 --> 00:07:25,410
The second mission will follow
a similar flight path,
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00:07:25,479 --> 00:07:26,812
with humans on board,
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00:07:26,880 --> 00:07:32,717
the first such voyage
in over 50 years.
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00:07:32,786 --> 00:07:34,052
Its initial target mission
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00:07:34,121 --> 00:07:36,555
is to bring astronauts
in orbit around the moon,
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00:07:36,623 --> 00:07:38,523
in order to lay the groundwork
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00:07:38,592 --> 00:07:40,892
for a new space station
that will orbit the moon
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00:07:40,961 --> 00:07:42,694
and an eventual return
to the moon
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by U.S. astronauts and robots.
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NARRATOR:
The SLS is the latest
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in a long line
of NASA's human-rated rockets,
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00:07:52,539 --> 00:07:55,073
starting with the one
that carried Alan Shepard
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00:07:55,142 --> 00:07:59,911
on his famous 15-minute flight
in 1961.
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♪ ♪
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00:08:02,082 --> 00:08:04,182
(engines ignite)
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00:08:04,251 --> 00:08:07,486
MAN:
All right now, liftoff
and the clock has started.
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00:08:07,554 --> 00:08:11,890
NARRATOR:
These liquid-fueled rockets
all share common features:
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engines at their base,
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00:08:13,660 --> 00:08:15,293
fed by powerful pumps
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00:08:15,362 --> 00:08:18,463
that draw propellant
from the tanks above.
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00:08:20,567 --> 00:08:23,535
Perched above all this
is the payload,
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the cargo to be delivered
to space.
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As payloads got bigger,
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00:08:29,843 --> 00:08:32,444
so did the rockets required
to launch them,
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culminating in the Saturn V,
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00:08:35,082 --> 00:08:39,017
capable of carrying over 48 tons
to the moon...
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MAN:
Two minutes, 30 seconds
and counting.
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We're still go on Apollo 11
at this time.
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00:08:44,558 --> 00:08:46,725
NARRATOR:
...and the space shuttle,
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00:08:46,793 --> 00:08:50,562
built to routinely haul
up to 32 tons to orbit.
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00:08:50,631 --> 00:08:52,397
MAN:
One, zero...
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00:08:52,466 --> 00:08:55,567
And liftoff, the final liftoff
of Atlantis,
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00:08:55,636 --> 00:08:58,136
the shoulders of
the space shuttle...
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00:08:58,205 --> 00:09:00,105
NARRATOR:
NASA's new rocket, the SLS,
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00:09:00,173 --> 00:09:03,408
will be even larger
than the Saturn V.
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00:09:03,477 --> 00:09:05,677
But rather than designing
from scratch,
188
00:09:05,746 --> 00:09:10,181
NASA has borrowed technologies
that have flown before.
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00:09:10,250 --> 00:09:12,984
SLS is a cross between
the Apollo,
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which had
the capsule at the top,
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00:09:16,189 --> 00:09:17,322
and the shuttle,
192
00:09:17,391 --> 00:09:19,691
which had
the two solid-rocket boosters
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00:09:19,760 --> 00:09:21,526
on each side.
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So if you look at Apollo
and shuttle,
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00:09:24,498 --> 00:09:26,831
you can see the similarities
of both of them
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coming together to form SLS.
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00:09:28,669 --> 00:09:33,972
♪ ♪
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00:09:34,041 --> 00:09:36,841
NARRATOR:
The SLS has not yet flown,
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00:09:36,910 --> 00:09:40,512
but as these aspirational
NASA animations suggest,
200
00:09:40,581 --> 00:09:43,782
it will be quite a sight
at liftoff.
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00:09:43,850 --> 00:09:46,051
The minute the SLS launches
off the pad,
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00:09:46,119 --> 00:09:48,453
it will be the
most powerful rocket ever made.
203
00:09:48,522 --> 00:09:49,955
♪ ♪
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00:09:50,023 --> 00:09:52,090
NARRATOR:
Building the
most powerful rocket in history
205
00:09:52,159 --> 00:09:54,025
is full of challenges--
206
00:09:54,094 --> 00:09:57,128
not least,
the size of the rocket.
207
00:09:57,197 --> 00:10:02,233
Even a single fuel tank,
like this one, is enormous.
208
00:10:02,302 --> 00:10:03,568
A building big enough
209
00:10:03,637 --> 00:10:06,871
to put this giant rocket
together inside is so vast,
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00:10:06,940 --> 00:10:09,374
the engineers use bicycles
to get around.
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00:10:09,443 --> 00:10:11,910
(bell chimes)
212
00:10:11,979 --> 00:10:14,446
Even the tools they're working
with to assemble the rocket
213
00:10:14,514 --> 00:10:16,548
are gigantic.
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00:10:16,617 --> 00:10:19,884
RENE HORTON:
I'm a weld and metals engineer
here for NASA.
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00:10:21,421 --> 00:10:24,122
This is
the vertical assembly center,
216
00:10:24,191 --> 00:10:26,024
and it's the largest weld tool
in the world,
217
00:10:26,093 --> 00:10:27,692
and it's the only one
of its kind.
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00:10:27,761 --> 00:10:29,194
♪ ♪
219
00:10:29,262 --> 00:10:32,230
NARRATOR:
The weld tool, a giant tower,
220
00:10:32,299 --> 00:10:35,367
tackles the tank
in sections called barrels,
221
00:10:35,435 --> 00:10:37,202
welding them together
vertically.
222
00:10:37,270 --> 00:10:39,671
HORTON:
When we're assembling a tank,
223
00:10:39,740 --> 00:10:40,972
it's done in different stages.
224
00:10:41,041 --> 00:10:44,542
So one barrel is welded
to the dome,
225
00:10:44,611 --> 00:10:48,246
and then once that's been welded
and checked and verified,
226
00:10:48,315 --> 00:10:49,814
then another barrel
is brought in.
227
00:10:49,883 --> 00:10:52,050
And so to assemble
a hydrogen tank,
228
00:10:52,119 --> 00:10:53,952
and you have five
of those barrels.
229
00:10:54,021 --> 00:10:58,256
And the very last piece is
the bottom, the aft dome.
230
00:10:58,325 --> 00:10:59,457
♪ ♪
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00:10:59,526 --> 00:11:00,692
NARRATOR:
The tanks are welded
232
00:11:00,761 --> 00:11:03,895
using friction to melt
the metals together,
233
00:11:03,964 --> 00:11:07,132
generated by spinning
the toolhead at high speed.
234
00:11:07,200 --> 00:11:08,767
(whirring)
235
00:11:08,835 --> 00:11:10,235
It looks easy,
236
00:11:10,303 --> 00:11:13,772
but in reality the construction
of this first hydrogen tank
237
00:11:13,840 --> 00:11:16,775
has been plagued by problems,
238
00:11:16,843 --> 00:11:20,578
putting the rocket far
behind schedule.
239
00:11:20,647 --> 00:11:22,681
FERNHOLZ:
It's a very troubled program,
basically.
240
00:11:22,749 --> 00:11:24,115
The SLS will cost
241
00:11:24,184 --> 00:11:27,352
at least $8.9 billion
through 2021,
242
00:11:27,421 --> 00:11:29,054
which is double
the amount initially planned.
243
00:11:29,122 --> 00:11:31,589
♪ ♪
244
00:11:31,658 --> 00:11:35,527
It's now ten years later,
245
00:11:35,595 --> 00:11:37,262
a couple billion dollars a year.
246
00:11:37,330 --> 00:11:39,030
It's continuing to be delayed.
247
00:11:39,099 --> 00:11:40,598
♪ ♪
248
00:11:40,667 --> 00:11:43,601
NARRATOR:
Overruns aside,
249
00:11:43,670 --> 00:11:47,172
it's an ambitious new rocket.
250
00:11:47,240 --> 00:11:49,541
But why does it have to be
so big,
251
00:11:49,609 --> 00:11:52,777
larger than any other?
252
00:11:52,846 --> 00:11:54,679
The answer lies
in the fundamentals
253
00:11:54,748 --> 00:11:56,414
of rocket science.
254
00:11:56,483 --> 00:12:00,552
♪ ♪
255
00:12:03,890 --> 00:12:05,156
♪ ♪
256
00:12:05,225 --> 00:12:08,326
At its heart, rocket science is
all about propulsion
257
00:12:08,395 --> 00:12:11,930
and a principle that was first
described by Isaac Newton,
258
00:12:11,998 --> 00:12:14,466
whose third law
of motion states,
259
00:12:14,534 --> 00:12:17,068
"For every action,
there is an equal
260
00:12:17,137 --> 00:12:19,070
and opposite re-action."
261
00:12:21,475 --> 00:12:25,710
So the principle behind a rocket
is actually really simple.
262
00:12:25,779 --> 00:12:29,547
All we really have here is
what's called a mass engine.
263
00:12:29,616 --> 00:12:31,549
If we have enough mass inside,
264
00:12:31,618 --> 00:12:33,818
and we push it out fast enough,
265
00:12:33,887 --> 00:12:35,687
then what we are going to be
able to do--
266
00:12:35,756 --> 00:12:38,523
through Newton's law,
action and reaction--
267
00:12:38,592 --> 00:12:42,427
is to propel this rocket,
I hope, skywards.
268
00:12:42,496 --> 00:12:45,396
NARRATOR:
First, mass.
269
00:12:45,465 --> 00:12:49,134
We're going to pour water
into a tank inside our rocket
270
00:12:49,202 --> 00:12:50,702
to add mass.
271
00:12:50,771 --> 00:12:52,303
And as we fill it up,
272
00:12:52,372 --> 00:12:56,074
I can feel the rocket
actually getting heavier.
273
00:12:56,143 --> 00:12:57,609
That's good sign,
274
00:12:57,677 --> 00:13:02,013
because that gives us
more mass, more propulsion
275
00:13:02,082 --> 00:13:04,849
to get the rocket to go
that much further.
276
00:13:04,918 --> 00:13:07,585
NARRATOR:
Second, a source of energy
277
00:13:07,654 --> 00:13:09,921
to push the water
out of the back of the rocket
278
00:13:09,990 --> 00:13:12,023
as fast as possible.
279
00:13:12,092 --> 00:13:13,892
For that, we're going to use
high-pressure air
280
00:13:13,960 --> 00:13:16,327
from this compressor.
281
00:13:16,396 --> 00:13:19,564
SELLA:
And so now all I need to do
282
00:13:19,633 --> 00:13:23,902
is to release the compressed air
into the rocket itself.
283
00:13:23,970 --> 00:13:26,204
(hissing)
284
00:13:26,273 --> 00:13:28,072
Pressurizing.
285
00:13:28,141 --> 00:13:30,775
NARRATOR:
The compressed air raises
the pressure
286
00:13:30,844 --> 00:13:32,744
in the rocket's water tank,
287
00:13:32,813 --> 00:13:35,079
which is prevented
from escaping.
288
00:13:35,148 --> 00:13:36,414
Until...
289
00:13:36,483 --> 00:13:41,853
Five, four, three, two, one.
290
00:13:41,922 --> 00:13:43,254
Go!
291
00:13:43,323 --> 00:13:44,856
Yay!
292
00:13:44,925 --> 00:13:46,057
♪ ♪
293
00:13:46,126 --> 00:13:47,458
NARRATOR:
When released,
294
00:13:47,527 --> 00:13:50,628
the high-pressure air pushes
the mass of water
295
00:13:50,697 --> 00:13:53,431
out of the nozzle at high speed,
296
00:13:53,500 --> 00:13:56,167
producing thrust
that propels the rocket
297
00:13:56,236 --> 00:13:59,537
in the opposite direction--
skywards.
298
00:13:59,606 --> 00:14:03,174
That's why it's called
a mass engine.
299
00:14:03,243 --> 00:14:04,509
And so there we are,
300
00:14:04,578 --> 00:14:07,478
the principle of action
and reaction.
301
00:14:07,547 --> 00:14:10,048
As we push the water
out the bottom,
302
00:14:10,116 --> 00:14:12,584
the rocket goes up.
303
00:14:12,652 --> 00:14:14,219
And so the question is,
304
00:14:14,287 --> 00:14:18,256
how much fuel and
how fast do you have to eject it
305
00:14:18,325 --> 00:14:20,825
in order to get a rocket
into space?
306
00:14:20,894 --> 00:14:25,864
NARRATOR:
This question is at the heart
of all rocket science.
307
00:14:25,932 --> 00:14:28,099
The combination
of the mass of propellant--
308
00:14:28,168 --> 00:14:29,534
in this case water--
309
00:14:29,603 --> 00:14:31,870
and the speed you're pushing it
out the back
310
00:14:31,938 --> 00:14:34,606
is what propels you
into the air.
311
00:14:34,674 --> 00:14:39,811
But you can't get to space using
cold, relatively slow water.
312
00:14:39,880 --> 00:14:42,480
Propelling a rocket fast enough
to reach space
313
00:14:42,549 --> 00:14:46,251
requires something much lighter
moving much faster--
314
00:14:46,319 --> 00:14:49,153
like rapidly expanding hot gas.
315
00:14:52,926 --> 00:14:56,494
The idea of using such
a hot gas rocket to reach space
316
00:14:56,563 --> 00:15:00,665
was first published in 1903
by Russian mathematician
317
00:15:00,734 --> 00:15:04,969
and scientist
Konstantin Tsiolkovsky.
318
00:15:05,038 --> 00:15:06,938
He worked out the best way
319
00:15:07,007 --> 00:15:11,476
of generating a lot of hot gas
expanding very rapidly.
320
00:15:11,544 --> 00:15:13,945
Gunpowder-- or "black powder"--
321
00:15:14,014 --> 00:15:15,813
seemed like
a good way to do that.
322
00:15:15,882 --> 00:15:16,948
(gunshot)
323
00:15:17,017 --> 00:15:18,383
It's what humans used
for centuries
324
00:15:18,451 --> 00:15:20,885
to fire everything from arrows
325
00:15:20,954 --> 00:15:24,289
to cannonballs
and rifle bullets.
326
00:15:24,357 --> 00:15:28,927
And it's one of the main fuels
in fireworks.
327
00:15:28,995 --> 00:15:31,629
SELLA:
I've got a small jar of it here.
328
00:15:31,698 --> 00:15:32,997
And what we'll do is
we'll just quickly
329
00:15:33,066 --> 00:15:35,867
take a look at what happens
when it lights.
330
00:15:35,936 --> 00:15:37,969
Here we go, let's go.
331
00:15:38,038 --> 00:15:39,871
Oof!
332
00:15:39,940 --> 00:15:41,539
It's pretty fast.
333
00:15:41,608 --> 00:15:43,541
♪ ♪
334
00:15:43,610 --> 00:15:44,943
NARRATOR:
When ignited,
335
00:15:45,011 --> 00:15:47,278
the gunpowder reacts
with oxygen,
336
00:15:47,347 --> 00:15:48,980
releasing a lot of energy
337
00:15:49,049 --> 00:15:53,217
and turning it into
a rapidly expanding hot gas.
338
00:15:53,286 --> 00:15:55,753
Seems like an ideal fuel
for a rocket.
339
00:15:55,822 --> 00:15:59,757
But there's a problem
with solid fuel like gunpowder.
340
00:15:59,826 --> 00:16:00,992
Once ignited,
341
00:16:01,061 --> 00:16:04,462
it burns
until the reaction is over.
342
00:16:04,531 --> 00:16:05,563
But in a rocket,
343
00:16:05,632 --> 00:16:08,166
it's preferable to have a fuel
344
00:16:08,234 --> 00:16:09,534
that can be controlled.
345
00:16:09,602 --> 00:16:12,070
SELLA:
Tsiolkovsky's crucial insight
346
00:16:12,138 --> 00:16:15,373
was the fact that
if you light a solid fuel,
347
00:16:15,442 --> 00:16:19,143
then the burn kind of goes on
until it runs out.
348
00:16:19,212 --> 00:16:20,545
If, on the other hand,
349
00:16:20,613 --> 00:16:23,481
he were to use liquid fuels,
350
00:16:23,550 --> 00:16:25,450
then he would be able to control
351
00:16:25,518 --> 00:16:28,619
how much liquid was being poured
into the flame.
352
00:16:28,688 --> 00:16:29,921
In other words,
353
00:16:29,990 --> 00:16:32,490
he would be able to exert
even greater control
354
00:16:32,559 --> 00:16:33,891
over his rocket.
355
00:16:33,960 --> 00:16:36,995
NARRATOR:
Tsiolkovsky started casting
around
356
00:16:37,063 --> 00:16:39,764
for the right liquid fuel
to use.
357
00:16:39,833 --> 00:16:41,165
At the time,
358
00:16:41,234 --> 00:16:44,402
high-quality liquid fuels
like kerosene and gasoline
359
00:16:44,471 --> 00:16:45,636
were becoming available,
360
00:16:45,705 --> 00:16:48,940
thanks to the emerging
petrochemical industry.
361
00:16:49,009 --> 00:16:49,974
Here on earth,
362
00:16:50,043 --> 00:16:51,843
these fuels burn by reacting
363
00:16:51,911 --> 00:16:53,444
with oxygen in the atmosphere.
364
00:16:53,513 --> 00:16:55,580
But in space, there is no air,
365
00:16:55,648 --> 00:16:59,517
so Tsiolkovsky proposed carrying
a supply of oxygen
366
00:16:59,586 --> 00:17:00,985
along with the fuel.
367
00:17:01,054 --> 00:17:04,155
It would take
an American scientist,
368
00:17:04,224 --> 00:17:06,758
also obsessed with the idea
of space flight,
369
00:17:06,826 --> 00:17:08,960
to build such a rocket.
370
00:17:09,029 --> 00:17:13,564
His name was Robert Goddard.
371
00:17:13,633 --> 00:17:16,267
SELLA:
So what Robert Goddard
came up with
372
00:17:16,336 --> 00:17:20,104
was the idea of combining
liquid kerosene
373
00:17:20,173 --> 00:17:21,739
with liquid oxygen,
374
00:17:21,808 --> 00:17:23,908
and by burning the two together,
375
00:17:23,977 --> 00:17:27,512
he would get a fierce flame
that he could control
376
00:17:27,580 --> 00:17:30,882
and that would really push
his rockets skyward.
377
00:17:30,950 --> 00:17:33,584
NARRATOR:
When the kerosene reacts
with the oxygen,
378
00:17:33,653 --> 00:17:37,855
the result is a very hot
rapidly expanding gas.
379
00:17:37,924 --> 00:17:39,524
And if channeled
through a nozzle,
380
00:17:39,592 --> 00:17:42,960
that hot, fast-moving gas
produces thrust
381
00:17:43,029 --> 00:17:46,097
that can push the rocket
in the opposite direction.
382
00:17:46,166 --> 00:17:48,900
SELLA:
What we get is
an enormous expansion
383
00:17:48,968 --> 00:17:50,635
and enormous push.
384
00:17:50,703 --> 00:17:53,738
But above all,
we can control it.
385
00:17:53,807 --> 00:17:56,374
NARRATOR:
With just such a design,
386
00:17:56,443 --> 00:17:59,877
on the 16th of March 1926,
387
00:17:59,946 --> 00:18:01,179
Robert Goddard finally launched
388
00:18:01,247 --> 00:18:04,849
the very first liquid-fueled
rocket in history.
389
00:18:04,918 --> 00:18:06,617
The flight was brief.
390
00:18:06,686 --> 00:18:10,121
The rocket didn't go far
or fast,
391
00:18:10,190 --> 00:18:11,889
but the potential was clear.
392
00:18:11,958 --> 00:18:16,127
Carrying liquid oxygen on board
393
00:18:16,196 --> 00:18:19,063
meant rockets could fly beyond
the Earth's atmosphere.
394
00:18:19,132 --> 00:18:20,364
SELLA:
And with that,
395
00:18:20,433 --> 00:18:23,367
Robert Goddard imagined
we could go to the moon.
396
00:18:23,436 --> 00:18:27,038
NARRATOR:
Goddard might have dreamed
of reaching the moon,
397
00:18:27,107 --> 00:18:31,609
but his liquid rockets
never even reached two miles
398
00:18:31,678 --> 00:18:33,010
into the sky.
399
00:18:33,079 --> 00:18:34,445
And that's because of something
400
00:18:34,514 --> 00:18:38,516
called Tsiolkovsky's
rocket equation.
401
00:18:38,585 --> 00:18:39,851
SELLA:
When Tsiolkovsky
402
00:18:39,919 --> 00:18:42,887
was thinking about
how to power a rocket,
403
00:18:42,956 --> 00:18:45,590
one of the things
that he realized
404
00:18:45,658 --> 00:18:48,493
was that you're not just moving
the payload,
405
00:18:48,561 --> 00:18:50,895
you've also got to move
the fuel.
406
00:18:50,964 --> 00:18:53,431
And the fuel itself has weight.
407
00:18:53,500 --> 00:18:56,434
Now, you can imagine putting
more and more fuel,
408
00:18:56,503 --> 00:18:58,903
in order to power your rocket
more,
409
00:18:58,972 --> 00:19:00,238
but at the same time,
410
00:19:00,306 --> 00:19:02,340
you're adding
more and more weight.
411
00:19:02,408 --> 00:19:07,311
NARRATOR:
Tsiolkovsky tried to describe
this "Catch-22" problem
412
00:19:07,380 --> 00:19:08,746
by considering things
413
00:19:08,815 --> 00:19:12,216
like the mass of the rocket,
the fuel, and the payload,
414
00:19:12,285 --> 00:19:14,352
and the velocity
it would need to reach
415
00:19:14,420 --> 00:19:16,087
to get to orbit.
416
00:19:16,156 --> 00:19:17,588
The longer the engine burns,
417
00:19:17,657 --> 00:19:20,091
the more velocity
the rocket will have.
418
00:19:20,160 --> 00:19:22,426
But longer burning means
more fuel,
419
00:19:22,495 --> 00:19:26,097
making the rocket heavier
and harder to push.
420
00:19:26,166 --> 00:19:27,798
It's a vicious cycle
421
00:19:27,867 --> 00:19:31,669
and still bedevils rocket
scientists today.
422
00:19:31,738 --> 00:19:35,573
To travel fast enough
to deliver a payload into space,
423
00:19:35,642 --> 00:19:38,976
most of the rocket
has to be fuel.
424
00:19:39,045 --> 00:19:43,381
♪ ♪
425
00:19:43,449 --> 00:19:47,351
The critical consequence
of the Tsiolkovsky equation
426
00:19:47,420 --> 00:19:49,987
is the fact that,
really rather depressingly,
427
00:19:50,056 --> 00:19:55,359
only a tiny percentage
of a rocket can ever be payload.
428
00:19:55,428 --> 00:19:56,761
And when you think back
429
00:19:56,829 --> 00:20:00,264
to the lunar missions
of the Apollo space program,
430
00:20:00,333 --> 00:20:05,136
those enormous rockets were used
to fire just three men.
431
00:20:05,205 --> 00:20:07,939
♪ ♪
432
00:20:08,007 --> 00:20:10,808
NARRATOR:
NASA's giant Saturn V--
433
00:20:10,877 --> 00:20:12,877
the largest,
most powerful rocket
434
00:20:12,946 --> 00:20:15,846
ever to fly.
435
00:20:15,915 --> 00:20:18,482
Built in a hurry to race
to the moon,
436
00:20:18,551 --> 00:20:20,718
engineers hacked
the rocket equation
437
00:20:20,787 --> 00:20:25,089
by building the Saturn V in
a series of disposable stages,
438
00:20:25,158 --> 00:20:28,392
where each set of tanks and
engines were discarded
439
00:20:28,461 --> 00:20:30,394
as they ran dry,
440
00:20:30,463 --> 00:20:33,564
shedding weight and allowing
the next rocket stage
441
00:20:33,633 --> 00:20:36,434
to accelerate even faster.
442
00:20:36,502 --> 00:20:40,438
But even a giant staging rocket
the size of the Saturn V
443
00:20:40,506 --> 00:20:44,041
wouldn't be large enough
to carry the Apollo spacecraft
444
00:20:44,110 --> 00:20:47,078
all the way to the moon
without the right fuel.
445
00:20:47,146 --> 00:20:49,847
Kerosene wouldn't do.
446
00:20:49,916 --> 00:20:51,148
In fact,
447
00:20:51,217 --> 00:20:53,784
there's only one fuel
that packs enough punch.
448
00:20:53,853 --> 00:20:58,055
A fuel that Tsiolkovsky himself
had also proposed.
449
00:20:58,124 --> 00:21:00,558
SELLA:
Tsiolkovsky's focus
450
00:21:00,627 --> 00:21:03,694
on the chemistry
that's available to us,
451
00:21:03,763 --> 00:21:07,498
and its crucial role
in being able to push a rocket,
452
00:21:07,567 --> 00:21:10,167
led him, inescapably,
to the conclusion
453
00:21:10,236 --> 00:21:12,303
that he needed the lightest
454
00:21:12,372 --> 00:21:15,740
and yet most energetic fuel
possible.
455
00:21:15,808 --> 00:21:18,175
And that had to be hydrogen.
456
00:21:18,244 --> 00:21:22,880
NARRATOR:
The power of hydrogen compared
to other fuels
457
00:21:22,949 --> 00:21:24,248
is easy to demonstrate,
458
00:21:24,317 --> 00:21:27,418
using a homemade cannon
and some sacrificial potatoes.
459
00:21:27,487 --> 00:21:31,155
First up, regular gasoline.
460
00:21:31,224 --> 00:21:33,724
SELLA:
We're really using the same sort
of fuel
461
00:21:33,793 --> 00:21:37,395
that, you know, you might put
in a car or in an airplane.
462
00:21:37,463 --> 00:21:38,729
Here we are.
463
00:21:38,798 --> 00:21:40,898
Now, we'll screw the end
over the barrel.
464
00:21:40,967 --> 00:21:44,902
Okay, right, so here we go.
465
00:21:46,606 --> 00:21:49,840
And now all it needs
is that vital spark.
466
00:21:49,909 --> 00:21:51,442
♪ ♪
467
00:21:51,511 --> 00:21:55,413
NARRATOR:
When ignited, the
highly reactive gasoline vapors
468
00:21:55,481 --> 00:21:58,783
are converted into
a very hot, fast-expanding gas
469
00:21:58,851 --> 00:22:00,885
that pushes the potato
out of the cannon.
470
00:22:00,953 --> 00:22:02,019
(plunking)
471
00:22:02,088 --> 00:22:03,754
Whoa!
472
00:22:03,823 --> 00:22:07,191
NARRATOR:
Gasoline has carried the potato
just over the bushes
473
00:22:07,260 --> 00:22:09,093
into the next field.
474
00:22:09,162 --> 00:22:10,795
Now, the same experiment--
475
00:22:10,863 --> 00:22:12,263
but instead of gasoline,
476
00:22:12,332 --> 00:22:14,665
we'll try the same mass
of hydrogen,
477
00:22:14,734 --> 00:22:16,067
an invisible gas.
478
00:22:16,135 --> 00:22:18,602
And so I've got the hydrogen
here
479
00:22:18,671 --> 00:22:20,805
in these monster syringes,
480
00:22:20,873 --> 00:22:22,540
which we've preloaded
481
00:22:22,608 --> 00:22:26,310
with a little bit of hydrogen
in each one.
482
00:22:26,379 --> 00:22:28,079
We're going to cap
the whole thing up.
483
00:22:28,147 --> 00:22:29,447
Now, I tell you,
484
00:22:29,515 --> 00:22:33,617
this thing is a really
pretty scary explosive mixture.
485
00:22:33,686 --> 00:22:38,189
This one is going to be
really loud.
486
00:22:38,257 --> 00:22:39,390
Here we go.
487
00:22:39,459 --> 00:22:42,393
Ready, aim, fire!
488
00:22:42,462 --> 00:22:43,894
Whoa!
489
00:22:43,963 --> 00:22:47,898
NARRATOR:
Hydrogen is the lightest element
in the universe,
490
00:22:47,967 --> 00:22:51,268
so you can pack a lot more atoms
into each pound of fuel.
491
00:22:51,337 --> 00:22:53,137
And when it reacts with oxygen,
492
00:22:53,206 --> 00:22:56,640
it burns with a near invisible
flame,
493
00:22:56,709 --> 00:23:00,411
producing a very familiar
substance: water,
494
00:23:00,480 --> 00:23:03,381
which expands rapidly
as a hot vapor.
495
00:23:03,449 --> 00:23:04,749
SELLA:
Whoa!
496
00:23:04,817 --> 00:23:07,985
That was
the biggest distance yet.
497
00:23:08,054 --> 00:23:11,922
NARRATOR:
Whether you're launching
potatoes across fields
498
00:23:11,991 --> 00:23:14,959
or big, heavy payloads
into deep space,
499
00:23:15,027 --> 00:23:18,996
there's no more efficient fuel
to use.
500
00:23:19,065 --> 00:23:21,665
♪ ♪
501
00:23:21,734 --> 00:23:24,235
And that's
why the Saturn V's upper stages
502
00:23:24,303 --> 00:23:27,438
also used hydrogen fuel
to get it to the moon.
503
00:23:27,507 --> 00:23:30,441
The main engines
of NASA's new SLS rocket
504
00:23:30,510 --> 00:23:35,112
will also be powered
by hydrogen.
505
00:23:35,181 --> 00:23:37,081
♪ ♪
506
00:23:37,150 --> 00:23:40,885
It's an engine called the RS-25.
507
00:23:40,953 --> 00:23:46,724
This model powered
all 135 space shuttles to orbit.
508
00:23:46,793 --> 00:23:48,793
It's an incredible record
509
00:23:48,861 --> 00:23:52,797
that makes the RS-25 one of the
most reliable rocket engines
510
00:23:52,865 --> 00:23:54,331
in history--
511
00:23:54,400 --> 00:23:58,269
and NASA wants to repurpose them
for the SLS.
512
00:23:58,337 --> 00:24:03,073
It's built by a company
called Aerojet Rocketdyne.
513
00:24:03,142 --> 00:24:07,878
Tom Martin works at their
world-class engine test facility
514
00:24:07,947 --> 00:24:13,050
here at NASA's Stennis
Space Center in Mississippi.
515
00:24:13,119 --> 00:24:16,320
MARTIN:
The RS-25
516
00:24:16,389 --> 00:24:19,223
was originally developed
in the 1970s and '80s,
517
00:24:19,292 --> 00:24:20,658
throughout the shuttle program.
518
00:24:20,726 --> 00:24:24,195
MAN:
Five, four... we've gone
for main engine start...
519
00:24:24,263 --> 00:24:25,896
We have main engine start.
520
00:24:27,166 --> 00:24:28,199
MARTIN:
Some of these engines have been
521
00:24:28,267 --> 00:24:30,167
in multiple flights in space.
522
00:24:30,236 --> 00:24:33,737
You know, very reliable,
very high-performing.
523
00:24:33,806 --> 00:24:36,774
NARRATOR:
There were three
of these RS-25 engines located
524
00:24:36,843 --> 00:24:39,109
at the tail end of each shuttle.
525
00:24:39,178 --> 00:24:40,578
At launch, they were supported
526
00:24:40,646 --> 00:24:44,782
by two detachable
solid-fuel boosters.
527
00:24:44,851 --> 00:24:47,184
MAN:
Good speed now,
320 miles per hour.
528
00:24:47,253 --> 00:24:50,521
NARRATOR:
But the three main engines were
part of the shuttle itself
529
00:24:50,590 --> 00:24:55,559
and returned to Earth each time
to be used again and again.
530
00:24:55,628 --> 00:24:57,194
♪ ♪
531
00:24:57,263 --> 00:25:00,698
But will they work
on NASA's new rocket?
532
00:25:00,766 --> 00:25:01,966
Today they're going to simulate
533
00:25:02,034 --> 00:25:04,735
a full SLS eight-minute launch
to space
534
00:25:04,804 --> 00:25:06,170
on one of the engines,
535
00:25:06,239 --> 00:25:09,740
to test the control
of its flight computers.
536
00:25:09,809 --> 00:25:13,377
♪ ♪
537
00:25:13,446 --> 00:25:14,945
You can see the A2 test stand,
538
00:25:15,014 --> 00:25:16,747
and then further off
in the distance,
539
00:25:16,816 --> 00:25:18,549
the A1 test stand.
540
00:25:18,618 --> 00:25:21,552
The A1 is where the RS-25
is going to be tested here
541
00:25:21,621 --> 00:25:22,887
in just a couple of minutes.
542
00:25:22,955 --> 00:25:24,722
♪ ♪
543
00:25:24,790 --> 00:25:26,257
NARRATOR:
Close to the test engine
544
00:25:26,325 --> 00:25:28,192
are 300,000 gallons
545
00:25:28,261 --> 00:25:33,397
of highly explosive
liquefied hydrogen and oxygen.
546
00:25:33,466 --> 00:25:36,300
MARTIN:
A crew will go in
right before test
547
00:25:36,369 --> 00:25:38,235
and verify
that there aren't any leaks,
548
00:25:38,304 --> 00:25:40,204
everything looks good.
549
00:25:40,273 --> 00:25:43,574
WOMAN:
And we are standing by
for the RS-25 engine test.
550
00:25:43,643 --> 00:25:46,544
Okay, it sounds like we're
two minutes away, all right.
551
00:25:46,612 --> 00:25:48,345
♪ ♪
552
00:25:48,414 --> 00:25:50,748
Nothing's 100% guaranteed,
553
00:25:50,816 --> 00:25:53,050
so there's always a little bit
of nerves before a test.
554
00:25:53,119 --> 00:25:54,852
We do everything we can
555
00:25:54,921 --> 00:25:57,888
to make sure the test and
the flights are going to go off,
556
00:25:57,957 --> 00:26:00,891
but, you know, there's always
unknowns that creep up.
557
00:26:00,960 --> 00:26:03,694
We'll evacuate the area
to at least a quarter mile,
558
00:26:03,763 --> 00:26:05,195
so if anything bad does happen,
559
00:26:05,264 --> 00:26:07,298
we want everybody to stay safe.
560
00:26:07,366 --> 00:26:10,701
Most of the test crew is
in the Test Control Center.
561
00:26:10,770 --> 00:26:13,037
That's where they control
and monitor the engine.
562
00:26:13,105 --> 00:26:14,438
♪ ♪
563
00:26:14,507 --> 00:26:16,440
NARRATOR:
Keeping a safe distance
is crucial,
564
00:26:16,509 --> 00:26:20,210
because when an engine fails,
565
00:26:20,279 --> 00:26:21,779
the results can be often
catastrophic,
566
00:26:21,847 --> 00:26:24,515
as seen in
this early Apollo engine test.
567
00:26:24,584 --> 00:26:28,886
(explosion)
568
00:26:28,955 --> 00:26:30,421
(siren blaring)
569
00:26:30,489 --> 00:26:31,589
So you can hear the siren.
570
00:26:31,657 --> 00:26:34,558
That means
we're one minute away.
571
00:26:34,627 --> 00:26:36,860
WOMAN:
Sounds like auto-sequence
has started.
572
00:26:36,929 --> 00:26:39,697
MARTIN:
At this point
the computers take over,
573
00:26:39,765 --> 00:26:42,466
it's kind of
under the computer command.
574
00:26:42,535 --> 00:26:44,168
The engine actually goes
from zero thrust to full thrust
575
00:26:44,236 --> 00:26:45,803
in, in about five seconds.
576
00:26:45,871 --> 00:26:50,307
♪ ♪
577
00:26:50,376 --> 00:26:51,842
WOMAN:
And we have ignition.
578
00:26:51,911 --> 00:26:57,147
♪ ♪
579
00:26:57,216 --> 00:26:59,750
(rocket roaring)
580
00:27:03,823 --> 00:27:06,357
NARRATOR:
As the engine hits full power,
581
00:27:06,425 --> 00:27:09,660
the temperature reaches
6,000 degrees,
582
00:27:09,729 --> 00:27:13,764
accelerating the exhaust out
at 13 times the speed of sound.
583
00:27:13,833 --> 00:27:17,735
Guzzling 1,500 gallons
of propellant each second,
584
00:27:17,803 --> 00:27:22,306
it's now generating just over
half a million pounds of thrust.
585
00:27:22,375 --> 00:27:26,143
The heavy steel structure
of the test stand
586
00:27:26,212 --> 00:27:27,945
keeps it firmly grounded,
587
00:27:28,014 --> 00:27:29,780
while the exhaust
is diverted
588
00:27:29,849 --> 00:27:33,417
out to the side using enormous
flame buckets.
589
00:27:33,486 --> 00:27:36,520
These billowing clouds
of combustion gas
590
00:27:36,589 --> 00:27:38,288
are just water vapor,
591
00:27:38,357 --> 00:27:40,991
formed as the hydrogen burns
in oxygen;
592
00:27:41,060 --> 00:27:43,293
and like naturally formed
clouds,
593
00:27:43,362 --> 00:27:46,230
sometimes they make rainbows.
594
00:27:48,367 --> 00:27:52,302
MARTIN:
You don't really get a sense for
what these machines are doing
595
00:27:52,371 --> 00:27:54,271
until you're on the ground
seeing a test,
596
00:27:54,340 --> 00:27:57,808
and then you get the full impact
of how powerful this stuff is
597
00:27:57,877 --> 00:28:00,678
and how hard it is to get things
into space.
598
00:28:03,716 --> 00:28:04,615
It never gets old seeing a test.
599
00:28:04,684 --> 00:28:07,051
I could see it every day.
600
00:28:07,119 --> 00:28:10,054
♪ ♪
601
00:28:10,122 --> 00:28:11,655
WOMAN:
The 535-second test
602
00:28:11,724 --> 00:28:14,725
of the RS-25 engine has
concluded.
603
00:28:14,794 --> 00:28:18,395
NARRATOR:
The engine's flight computer has
performed flawlessly,
604
00:28:18,464 --> 00:28:20,297
controlling the throttling
of the rocket
605
00:28:20,366 --> 00:28:23,333
through the simulated ascent
to space.
606
00:28:23,402 --> 00:28:25,202
MARTIN:
It gives me goose bumps
607
00:28:25,271 --> 00:28:26,937
every time
I hear the engine start.
608
00:28:27,006 --> 00:28:28,272
I mean,
it's a visceral experience
609
00:28:28,340 --> 00:28:31,408
to, to, to see an engine test.
610
00:28:33,713 --> 00:28:37,281
♪ ♪
611
00:28:37,349 --> 00:28:39,383
NARRATOR:
If it all goes as planned,
612
00:28:39,452 --> 00:28:43,754
the engine they've tested today
will power the first SLS rocket
613
00:28:43,823 --> 00:28:46,724
in the early 2020s.
614
00:28:46,792 --> 00:28:48,826
And like the Saturn V,
this engine--
615
00:28:48,894 --> 00:28:51,462
along with most
of the rest of the rocket--
616
00:28:51,530 --> 00:28:54,198
will be dropped into the ocean,
never to be used again,
617
00:28:54,266 --> 00:28:56,567
after just one flight.
618
00:28:56,635 --> 00:28:58,769
That's at least
part of the reason
619
00:28:58,838 --> 00:29:00,938
why getting huge, heavy payloads
into deep space
620
00:29:01,006 --> 00:29:03,807
is still so expensive.
621
00:29:03,876 --> 00:29:06,076
But is that the only solution?
622
00:29:06,145 --> 00:29:07,344
(radio squawking)
623
00:29:07,413 --> 00:29:11,448
Why not reuse your rocket
like an airliner?
624
00:29:11,517 --> 00:29:14,485
♪ ♪
625
00:29:14,553 --> 00:29:18,322
That question poses an array
of new challenges.
626
00:29:18,390 --> 00:29:20,958
(jet engine roaring)
627
00:29:21,026 --> 00:29:24,128
The airplane, if you threw it
away after every flight,
628
00:29:24,196 --> 00:29:25,763
would be a very expensive way
to travel.
629
00:29:25,831 --> 00:29:27,564
(suitcase wheels clacking)
630
00:29:27,633 --> 00:29:30,534
In the beginning of aviation,
631
00:29:30,603 --> 00:29:33,170
we created vehicles
to be reused.
632
00:29:33,239 --> 00:29:37,674
For rocketry,
we somehow forgot that,
633
00:29:37,743 --> 00:29:41,211
and we're not benefitting
from reusability.
634
00:29:41,280 --> 00:29:45,582
We threw away everything
when we were done.
635
00:29:45,651 --> 00:29:48,118
NARRATOR:
And that's because
636
00:29:48,187 --> 00:29:51,488
making a landing from space
by reentering the atmosphere
637
00:29:51,557 --> 00:29:54,358
at a speed
of five miles a second,
638
00:29:54,426 --> 00:29:55,859
is much harder
than landing a plane
639
00:29:55,928 --> 00:29:56,960
from a cruising speed
640
00:29:57,029 --> 00:30:01,198
of over 800 feet per second.
641
00:30:01,267 --> 00:30:02,966
After the Apollo mission,
642
00:30:03,035 --> 00:30:05,936
NASA tried to build
a reusable space plane
643
00:30:06,005 --> 00:30:08,038
through the 1970s--
644
00:30:08,107 --> 00:30:10,541
the iconic space shuttle.
645
00:30:10,609 --> 00:30:13,110
MAN:
And the shuttle has cleared
the tower.
646
00:30:13,179 --> 00:30:16,580
NARRATOR:
But there were problems
from the start.
647
00:30:16,649 --> 00:30:20,551
GARVER:
The space shuttle was supposed
to travel every other week,
648
00:30:20,619 --> 00:30:24,288
40 times a year was
their proposal,
649
00:30:24,356 --> 00:30:26,023
which would have dropped
the cost significantly.
650
00:30:26,091 --> 00:30:27,825
♪ ♪
651
00:30:27,893 --> 00:30:29,793
We thought
if you're reusing an engine,
652
00:30:29,862 --> 00:30:33,330
it's going to be less expensive,
653
00:30:33,399 --> 00:30:35,365
but they again had
to pretty much take apart
654
00:30:35,434 --> 00:30:37,201
and rebuilt the shuttle
main engines
655
00:30:37,269 --> 00:30:38,602
after every flight.
656
00:30:38,671 --> 00:30:40,337
♪ ♪
657
00:30:40,406 --> 00:30:43,540
The space shuttle never was able
to launch regularly,
658
00:30:43,609 --> 00:30:47,477
and it was very, very
expensive,
659
00:30:47,546 --> 00:30:49,413
about a billion a flight.
660
00:30:49,481 --> 00:30:53,450
NARRATOR:
Footing that kind of bill was
not sustainable for NASA.
661
00:30:53,519 --> 00:30:54,651
And in the early 1990s
662
00:30:54,720 --> 00:30:57,721
the agency started funding
research
663
00:30:57,790 --> 00:31:01,358
into other ways
of making rockets reusable.
664
00:31:01,427 --> 00:31:05,395
Engineer John Garvey was
on the team.
665
00:31:05,464 --> 00:31:08,532
GARVEY:
There are different ways to do
reusability,
666
00:31:08,601 --> 00:31:11,368
and many advocates believe
that a vertical lander
667
00:31:11,437 --> 00:31:12,836
is, is the way to go
668
00:31:12,905 --> 00:31:16,640
if you can just come down on the
same engines that you launch on.
669
00:31:16,709 --> 00:31:19,509
♪ ♪
670
00:31:19,578 --> 00:31:21,511
NARRATOR:
They developed
an experimental rocket
671
00:31:21,580 --> 00:31:24,481
known as the Delta Clipper.
672
00:31:24,550 --> 00:31:26,183
It was a radical departure,
673
00:31:26,252 --> 00:31:29,152
as this rarely seen footage
shows.
674
00:31:29,221 --> 00:31:32,756
GARVEY:
The Delta Clipper Experimental,
or DCX,
675
00:31:32,825 --> 00:31:35,626
was an experimental
vertical take-off,
676
00:31:35,694 --> 00:31:38,128
vertical landing rocket.
677
00:31:38,197 --> 00:31:39,730
FERNHOLZ:
Unlike the space shuttle,
678
00:31:39,798 --> 00:31:41,832
which was designed to fly
back to earth,
679
00:31:41,901 --> 00:31:44,334
the Delta Clipper would land
on its tail.
680
00:31:44,403 --> 00:31:46,503
♪ ♪
681
00:31:46,572 --> 00:31:50,507
NARRATOR:
Test flights of the DCX began
in the early 1990s
682
00:31:50,576 --> 00:31:53,577
at a desert testing ground
out in New Mexico.
683
00:31:53,646 --> 00:31:55,512
Nothing like this
had ever been attempted before.
684
00:31:55,581 --> 00:31:58,215
♪ ♪
685
00:31:58,284 --> 00:31:59,850
GARVEY:
We took it out to White Sands,
686
00:31:59,919 --> 00:32:02,452
a missile range
out in New Mexico,
687
00:32:02,521 --> 00:32:04,254
and launched it multiple times.
688
00:32:04,323 --> 00:32:09,526
NARRATOR:
This footage looks like outtakes
from a science fiction movie.
689
00:32:11,096 --> 00:32:12,562
It flew, you know,
maybe 10,000 feet,
690
00:32:12,631 --> 00:32:13,764
but it was demonstrating
691
00:32:13,832 --> 00:32:15,599
that it was possible to get
the rocket back
692
00:32:15,668 --> 00:32:17,901
and fly it
with minimum refurbishment,
693
00:32:17,970 --> 00:32:19,403
reduce costs.
694
00:32:19,471 --> 00:32:22,839
♪ ♪
695
00:32:22,908 --> 00:32:26,310
NARRATOR:
The engineering team was on top
of the world.
696
00:32:26,378 --> 00:32:30,080
But their fortunes were
about to change.
697
00:32:30,149 --> 00:32:33,517
GARVEY:
There was a line
that was not hooked up,
698
00:32:33,585 --> 00:32:38,188
and as a result,
as it was landing,
699
00:32:38,257 --> 00:32:40,390
only three of the landing legs
deployed,
700
00:32:40,459 --> 00:32:41,692
the fourth one did not,
701
00:32:41,760 --> 00:32:43,393
so it actually landed
successfully,
702
00:32:43,462 --> 00:32:44,795
and I was like, "Yep, let's go!"
703
00:32:44,863 --> 00:32:48,966
MAN:
Landing small negative.
704
00:32:49,034 --> 00:32:50,801
Engine out.
705
00:32:50,869 --> 00:32:53,203
MAN:
She's going over.
706
00:32:53,272 --> 00:32:54,771
(explosion)
707
00:32:54,840 --> 00:32:56,273
GARVEY:
Then you turn around,
and then the rocket's gone,
708
00:32:56,342 --> 00:32:57,240
and it's on the side,
709
00:32:57,309 --> 00:32:58,709
and the tanks are rupturing.
710
00:32:58,777 --> 00:33:01,445
(explosions)
711
00:33:01,513 --> 00:33:02,746
Yeah, it was a tough day.
712
00:33:02,815 --> 00:33:04,948
But, you know, that's how...
that's...
713
00:33:05,017 --> 00:33:06,249
If you're in this business,
714
00:33:06,318 --> 00:33:07,951
you, you've got to get used
to it,
715
00:33:08,020 --> 00:33:09,753
you've got to roll with it
and just say,
716
00:33:09,822 --> 00:33:10,954
"That's part of the deal."
717
00:33:11,023 --> 00:33:13,590
And if you can't handle it,
don't do it.
718
00:33:13,659 --> 00:33:14,858
♪ ♪
719
00:33:14,927 --> 00:33:16,793
NARRATOR:
Losing the entire vehicle
720
00:33:16,862 --> 00:33:18,528
before it reached space
721
00:33:18,597 --> 00:33:22,833
led NASA to cancel the program
to pursue other avenues.
722
00:33:22,901 --> 00:33:25,202
(radio squawking)
723
00:33:25,270 --> 00:33:28,271
But there was one person
who saw the potential:
724
00:33:28,340 --> 00:33:30,741
a South African-born
entrepreneur
725
00:33:30,809 --> 00:33:34,111
who'd made his first fortune
disrupting the banking industry
726
00:33:34,179 --> 00:33:36,713
with a company called PayPal--
727
00:33:36,782 --> 00:33:39,683
Elon Musk.
728
00:33:39,752 --> 00:33:43,453
FERNHOLZ:
Musk had always been
a science-fiction fan
729
00:33:43,522 --> 00:33:44,855
and interested
in the possibilities
730
00:33:44,923 --> 00:33:46,189
of colonizing other planets.
731
00:33:46,258 --> 00:33:48,658
And after he became wealthy
as an entrepreneur,
732
00:33:48,727 --> 00:33:49,860
he had some money
733
00:33:49,928 --> 00:33:52,229
he could put toward
this kind of scheme.
734
00:33:52,297 --> 00:33:55,332
And that's how SpaceX was born.
735
00:33:55,401 --> 00:33:56,900
There have to be reasons that
you get up in the morning,
736
00:33:56,969 --> 00:33:58,268
and you want to live.
737
00:33:58,337 --> 00:33:59,469
Like, why do you want to live?
738
00:33:59,538 --> 00:34:01,304
What, what's the point?
What, what inspires you?
739
00:34:01,373 --> 00:34:03,540
What, what do you love
about the future?
740
00:34:03,609 --> 00:34:05,108
And if we're not out there...
741
00:34:05,177 --> 00:34:09,179
if the future does not include
being out there among the stars
742
00:34:09,248 --> 00:34:10,881
and being
a multi-planet species,
743
00:34:10,949 --> 00:34:13,350
I find that...
it's incredibly depressing
744
00:34:13,419 --> 00:34:16,219
if that's not the future
that we're going to have.
745
00:34:16,288 --> 00:34:17,954
♪ ♪
746
00:34:18,023 --> 00:34:19,856
NARRATOR:
In the early 2000s,
747
00:34:19,925 --> 00:34:22,325
there was
little business incentive
748
00:34:22,394 --> 00:34:25,996
in building rockets
to take people to space,
749
00:34:26,065 --> 00:34:28,031
let alone Mars.
750
00:34:28,100 --> 00:34:29,366
But that was about to change.
751
00:34:29,435 --> 00:34:31,935
♪ ♪
752
00:34:34,940 --> 00:34:36,073
MAN (on radio):
GNC, are you ready?
753
00:34:36,141 --> 00:34:37,007
MAN (on radio):
Flight max, we're ready.
754
00:34:37,076 --> 00:34:38,308
MAN:
GNC is go.
755
00:34:38,377 --> 00:34:41,912
MAN:
I think we're ready,
no deltas.
756
00:34:41,980 --> 00:34:45,215
NARRATOR:
On the first of February 2003,
757
00:34:45,284 --> 00:34:47,717
NASA's oldest space shuttle,
Columbia,
758
00:34:47,786 --> 00:34:49,419
was returning from orbit.
759
00:34:49,488 --> 00:34:53,190
MAN:
Columbia, Houston,
UHF comm check.
760
00:34:53,258 --> 00:34:56,393
NARRATOR:
Loss of voice communication
is always expected
761
00:34:56,462 --> 00:34:57,727
for a short time
during reentry.
762
00:34:57,796 --> 00:34:59,930
(radio static popping)
763
00:34:59,998 --> 00:35:01,731
But on this occasion,
764
00:35:01,800 --> 00:35:05,735
contact was never reestablished
with Columbia.
765
00:35:05,804 --> 00:35:09,873
Damage during launch,
which no one had noticed,
766
00:35:09,942 --> 00:35:13,376
caused Columbia to burn up
during reentry over America,
767
00:35:13,445 --> 00:35:14,711
killing all onboard.
768
00:35:14,780 --> 00:35:15,712
MAN (on radio):
TC, Flight.
769
00:35:15,781 --> 00:35:16,713
MAN (on radio):
Flight, TC.
770
00:35:16,782 --> 00:35:17,681
MAN:
Lock the doors.
771
00:35:17,749 --> 00:35:19,216
MAN:
Copy.
772
00:35:19,284 --> 00:35:20,817
♪ ♪
773
00:35:20,886 --> 00:35:23,253
NARRATOR:
The risks of flying
such a complex spacecraft
774
00:35:23,322 --> 00:35:25,422
were brought into sharp focus.
775
00:35:25,491 --> 00:35:27,924
It was time for NASA to rethink
776
00:35:27,993 --> 00:35:30,827
how they launched
their astronauts into space.
777
00:35:34,099 --> 00:35:39,936
There was a decision after
the Columbia accident in 2003,
778
00:35:40,005 --> 00:35:44,107
to retire the shuttle as soon as
the International Space Station
779
00:35:44,176 --> 00:35:46,143
was fully assembled.
780
00:35:46,211 --> 00:35:49,679
NARRATOR:
Rather than build
a new spacecraft themselves
781
00:35:49,748 --> 00:35:51,047
to reach the Space Station,
782
00:35:51,116 --> 00:35:54,651
NASA decided they would buy
future astronaut seats
783
00:35:54,720 --> 00:35:59,589
and cargo delivery missions
from private companies.
784
00:35:59,658 --> 00:36:02,159
The man charged with finding
and developing those suppliers
785
00:36:02,227 --> 00:36:05,228
was Alan Lindenmoyer.
786
00:36:05,297 --> 00:36:06,930
SpaceX was
a new start-up company;
787
00:36:06,999 --> 00:36:09,166
they had only been in business
for a few years,
788
00:36:09,234 --> 00:36:10,734
and when we visited them,
789
00:36:10,802 --> 00:36:12,435
they had maybe
a couple hundred people.
790
00:36:12,504 --> 00:36:15,238
They were very busy,
791
00:36:15,307 --> 00:36:17,140
and we could sense,
and we could see
792
00:36:17,209 --> 00:36:20,977
that this was extremely talented
team
793
00:36:21,046 --> 00:36:23,513
that we believed had
the ability
794
00:36:23,582 --> 00:36:25,048
to, to complete it, the job.
795
00:36:25,117 --> 00:36:28,051
NARRATOR:
Closing a deal with NASA
796
00:36:28,120 --> 00:36:30,620
to send cargo and crew
to the Space Station
797
00:36:30,689 --> 00:36:32,556
was a huge boost to SpaceX,
798
00:36:32,624 --> 00:36:36,026
but also a risk
for the space agency.
799
00:36:36,094 --> 00:36:40,297
So they appointed their long-
time aerospace partner Boeing
800
00:36:40,365 --> 00:36:43,033
to build
another new crew vehicle,
801
00:36:43,101 --> 00:36:45,402
to fly on their existing
single-use rockets
802
00:36:45,470 --> 00:36:46,937
like the Atlas V.
803
00:36:47,005 --> 00:36:50,407
SpaceX was in the spotlight,
as they set about
804
00:36:50,475 --> 00:36:54,711
trying to develop
a brand-new, reusable rocket.
805
00:36:54,780 --> 00:36:56,613
FERNHOLZ:
It's classic Elon Musk.
806
00:36:56,682 --> 00:36:58,181
He's set himself up
to do something
807
00:36:58,250 --> 00:37:01,284
that no one else says he can do,
or is really asking for,
808
00:37:01,353 --> 00:37:04,221
but if he delivers,
it might change the world.
809
00:37:04,289 --> 00:37:06,022
♪ ♪
810
00:37:06,091 --> 00:37:10,293
NARRATOR:
Attempting to fly a reusable
rocket to space and back
811
00:37:10,362 --> 00:37:13,496
is about as hard
as aerospace engineering gets.
812
00:37:15,801 --> 00:37:19,803
♪ ♪
813
00:37:19,871 --> 00:37:22,405
GARVEY:
It's hard enough building
a rocket that can get to orbit.
814
00:37:22,474 --> 00:37:24,407
Now, if you have to build
the additional capability
815
00:37:24,476 --> 00:37:25,675
to bring it back,
816
00:37:25,744 --> 00:37:28,778
the margins get even tighter.
817
00:37:28,847 --> 00:37:31,615
NARRATOR:
Returning a rocket safely
back to the launch site
818
00:37:31,683 --> 00:37:33,750
involves a series
of complex steps,
819
00:37:33,819 --> 00:37:35,885
which begin
on the edge of space,
820
00:37:35,954 --> 00:37:40,490
when still traveling
at over 3,500 miles per hour.
821
00:37:40,559 --> 00:37:43,159
FERNHOLZ:
First the rocket does
what's called a boost-back burn,
822
00:37:43,228 --> 00:37:45,562
it fires its engines,
slows itself down,
823
00:37:45,631 --> 00:37:48,798
and starts returning
in the opposite direction.
824
00:37:48,867 --> 00:37:50,267
NARRATOR:
Now on a trajectory
825
00:37:50,335 --> 00:37:52,535
that's taking it back
towards the launch site,
826
00:37:52,604 --> 00:37:57,841
this giant, 14-story tower must
turn itself around once more
827
00:37:57,909 --> 00:37:59,743
to point the engines forward
828
00:37:59,811 --> 00:38:03,146
as it starts to reenter
the top of the atmosphere.
829
00:38:03,215 --> 00:38:06,383
And that's when things begin
to get tricky.
830
00:38:06,451 --> 00:38:08,785
GARVEY:
A rocket is an unstable vehicle.
831
00:38:08,854 --> 00:38:10,287
You have to deal
with the control elements,
832
00:38:10,355 --> 00:38:12,555
so how do you keep it stable
on the way down?
833
00:38:12,624 --> 00:38:15,425
FERNHOLZ:
It has maneuvering jets
at the top
834
00:38:15,494 --> 00:38:17,727
that shoot out bursts
of compressed air
835
00:38:17,796 --> 00:38:19,162
to keep it aligned,
836
00:38:19,231 --> 00:38:21,231
but its main way to keep going
in the right direction
837
00:38:21,300 --> 00:38:23,033
are something called grid fins.
838
00:38:23,101 --> 00:38:26,936
NARRATOR:
These fins--
the size of dining tables--
839
00:38:27,005 --> 00:38:30,307
act as paddles to steer and
slow the falling booster rocket
840
00:38:30,375 --> 00:38:33,076
as it enters
the denser lower atmosphere.
841
00:38:33,145 --> 00:38:36,079
FERNHOLZ:
As the rocket gets closer
and closer to land,
842
00:38:36,148 --> 00:38:38,481
it does more controlled burns
with its engine
843
00:38:38,550 --> 00:38:42,252
to slow down and align itself
with the landing pad.
844
00:38:42,321 --> 00:38:45,955
NARRATOR:
As the engine ignites
into a hypersonic headwind,
845
00:38:46,024 --> 00:38:51,294
the 33-ton rocket suddenly
becomes even more unstable.
846
00:38:51,363 --> 00:38:53,596
It's like balancing a pencil
on the end of your finger
847
00:38:53,665 --> 00:38:56,299
and think of how much effort
and work you need to do that
848
00:38:56,368 --> 00:38:57,634
yourself.
849
00:38:57,703 --> 00:38:59,302
NARRATOR:
An array of sensors
850
00:38:59,371 --> 00:39:02,205
is now constantly relaying
the rocket's orientation
851
00:39:02,274 --> 00:39:03,773
to the engines at the base,
852
00:39:03,842 --> 00:39:05,275
that swings left and right
853
00:39:05,344 --> 00:39:09,245
to keep the vehicle upright
as it slows down.
854
00:39:09,314 --> 00:39:11,514
GARVEY:
Landing on a, a pillar of fire,
855
00:39:11,583 --> 00:39:13,583
that last five feet can be
critical
856
00:39:13,652 --> 00:39:16,653
if you don't know
where the ground is.
857
00:39:16,722 --> 00:39:18,588
NARRATOR:
Approaching the landing pad,
858
00:39:18,657 --> 00:39:21,891
the onboard autopilot
now deploys legs
859
00:39:21,960 --> 00:39:23,360
and throttles back the engine,
860
00:39:23,428 --> 00:39:27,731
so that velocity and altitude
both equal zero together.
861
00:39:31,837 --> 00:39:33,570
All of these different variables
just show
862
00:39:33,638 --> 00:39:35,405
how much has to go right
863
00:39:35,474 --> 00:39:37,574
every time the rocket comes back
to earth
864
00:39:37,642 --> 00:39:38,975
for it to land.
865
00:39:39,044 --> 00:39:42,545
NARRATOR:
Easy to pull off
in a slick animation,
866
00:39:42,614 --> 00:39:44,848
but a long shot in real life.
867
00:39:44,916 --> 00:39:48,718
Then another internet
entrepreneur with similar dreams
868
00:39:48,787 --> 00:39:50,920
stepped forward--
869
00:39:50,989 --> 00:39:52,956
Amazon founder Jeff Bezos,
870
00:39:53,024 --> 00:39:55,725
who'd quietly founded a company
in the year 2000
871
00:39:55,794 --> 00:39:58,261
called Blue Origin.
872
00:39:58,330 --> 00:39:59,329
FERNHOLZ:
One example
873
00:39:59,398 --> 00:40:01,231
of the secrecy
behind Blue Origin
874
00:40:01,299 --> 00:40:03,800
is the first time we really
learned what they were doing
875
00:40:03,869 --> 00:40:06,202
is when a journalist went
through the trash cans
876
00:40:06,271 --> 00:40:08,671
outside of their office
in Washington
877
00:40:08,740 --> 00:40:10,740
and discovered the plans,
878
00:40:10,809 --> 00:40:14,210
or at least memos discussing
their goals of space tourism.
879
00:40:14,279 --> 00:40:16,246
♪ ♪
880
00:40:16,314 --> 00:40:19,215
NARRATOR:
Working quietly,
without fanfare,
881
00:40:19,284 --> 00:40:22,018
it takes Bezos and Musk more
than a decade to pull off
882
00:40:22,087 --> 00:40:25,655
their first successful
vertical-landing rockets.
883
00:40:25,724 --> 00:40:29,259
Bezos' rocket--
named New Shepard
884
00:40:29,327 --> 00:40:31,928
after the first American
astronaut Alan Shepard--
885
00:40:31,997 --> 00:40:33,963
reached the edge of space
886
00:40:34,032 --> 00:40:36,699
on the 23rd of November 2015,
887
00:40:36,768 --> 00:40:39,903
and returned to the launch pad
a few minutes later.
888
00:40:39,971 --> 00:40:43,706
♪ ♪
889
00:40:43,775 --> 00:40:44,974
Within a month,
890
00:40:45,043 --> 00:40:47,777
Musk's first reusable
SpaceX rocket booster,
891
00:40:47,846 --> 00:40:51,714
called the Falcon 9,
touched down vertically too,
892
00:40:51,783 --> 00:40:55,985
after delivering a payload
all the way to orbit.
893
00:40:56,054 --> 00:40:58,655
These two triumphs marked
a major step
894
00:40:58,723 --> 00:41:01,324
in the pursuit
of a more reusable rocket,
895
00:41:01,393 --> 00:41:04,227
and perhaps the beginning
of a new era
896
00:41:04,296 --> 00:41:06,563
for lower-cost trips
to Earth orbit
897
00:41:06,631 --> 00:41:11,201
and the long-awaited promise of
more affordable space tourism.
898
00:41:13,972 --> 00:41:19,042
♪ ♪
899
00:41:19,110 --> 00:41:22,579
While Space X has continued
its successful track record,
900
00:41:22,647 --> 00:41:26,382
with over 20 commercial launches
in 2018 alone,
901
00:41:26,451 --> 00:41:30,220
another, quieter rocket
revolution is underway--
902
00:41:30,288 --> 00:41:34,090
one that's being driven
by miniaturization.
903
00:41:34,159 --> 00:41:36,593
Today, everybody knows that
microchips, batteries,
904
00:41:36,661 --> 00:41:38,595
solar panels are smaller
and more powerful
905
00:41:38,663 --> 00:41:40,129
than they ever have been,
906
00:41:40,198 --> 00:41:41,931
but what that allows engineers
to do
907
00:41:42,000 --> 00:41:46,002
is build small satellites that
are cheaper and weigh much less,
908
00:41:46,071 --> 00:41:48,771
but can do everything
old satellites do.
909
00:41:48,840 --> 00:41:52,475
NARRATOR:
Such small,
low-cost satellites--
910
00:41:52,544 --> 00:41:54,344
some known as cube sats--
911
00:41:54,412 --> 00:41:56,346
can be deployed very quickly
912
00:41:56,414 --> 00:41:57,747
and may transform
913
00:41:57,816 --> 00:42:01,017
the way we communicate,
navigate, and observe Earth
914
00:42:01,086 --> 00:42:03,286
from space.
915
00:42:03,355 --> 00:42:04,954
KALIRAI:
One of the advantages
916
00:42:05,023 --> 00:42:06,489
of having multiple spacecrafts
917
00:42:06,558 --> 00:42:08,291
working in synergy
with one another
918
00:42:08,360 --> 00:42:10,960
is that you can monitor things
like wildfires
919
00:42:11,029 --> 00:42:12,428
that are spreading rapidly.
920
00:42:12,497 --> 00:42:14,931
You can do this in real time.
921
00:42:15,000 --> 00:42:16,232
We can track earthquakes,
922
00:42:16,301 --> 00:42:18,801
whether or not it's going
to shoot off a tsunami.
923
00:42:18,870 --> 00:42:19,903
We have much more data
924
00:42:19,971 --> 00:42:21,771
to be able to pinpoint
the location
925
00:42:21,840 --> 00:42:23,006
of catastrophic events
926
00:42:23,074 --> 00:42:24,908
and then take action
to remedy that.
927
00:42:24,976 --> 00:42:28,611
NARRATOR:
This new generation
of tiny satellites
928
00:42:28,680 --> 00:42:32,715
is spawning a new array
of rocket-launch companies.
929
00:42:32,784 --> 00:42:35,985
Because, thanks to Tsiolkovsky's
rocket equation,
930
00:42:36,054 --> 00:42:38,187
once the payloads are smaller,
931
00:42:38,256 --> 00:42:41,124
the mass of fuel can be smaller
too.
932
00:42:41,192 --> 00:42:45,061
And that makes it cheaper to get
to orbit.
933
00:42:45,130 --> 00:42:49,365
♪ ♪
934
00:42:53,138 --> 00:42:57,173
One company aiming at
this new market is Rocket Lab.
935
00:42:57,242 --> 00:42:58,975
♪ ♪
936
00:42:59,044 --> 00:43:03,246
Its founder is New Zealand
engineer Peter Beck.
937
00:43:03,315 --> 00:43:06,516
BECK:
The whole purpose of Rocket Lab
is, is to enable frequent,
938
00:43:06,585 --> 00:43:09,786
affordable access to space,
and if we can do that,
939
00:43:09,854 --> 00:43:11,688
then some really incredible
things will start to happen.
940
00:43:11,756 --> 00:43:14,424
♪ ♪
941
00:43:14,492 --> 00:43:16,726
NARRATOR:
Until Rocket Lab came along,
942
00:43:16,795 --> 00:43:18,695
the most affordable rocket ride
to orbit
943
00:43:18,763 --> 00:43:21,864
would set you back
around $60 million.
944
00:43:21,933 --> 00:43:26,302
But they can do it for
less than a tenth of this price.
945
00:43:26,371 --> 00:43:29,038
Our prices start at
$5.7 million.
946
00:43:29,107 --> 00:43:31,374
♪ ♪
947
00:43:31,443 --> 00:43:34,911
So that's a, a dramatic order
of magnitude change.
948
00:43:34,980 --> 00:43:38,247
MAN:
Five, four, three, two...
949
00:43:38,316 --> 00:43:39,382
MAN:
Ignition.
950
00:43:39,451 --> 00:43:42,218
(engine ignites)
951
00:43:47,692 --> 00:43:50,727
NARRATOR:
Getting to orbit
for this sort of price
952
00:43:50,795 --> 00:43:53,196
requires a new approach
to rocket building.
953
00:43:53,264 --> 00:43:54,364
BECK:
It's the world's first
954
00:43:54,432 --> 00:43:56,499
all-carbon composite
launch vehicle
955
00:43:56,568 --> 00:43:57,767
to ever reach orbit.
956
00:43:57,836 --> 00:44:00,703
The carbon-fiber gives us
a strong advantage
957
00:44:00,772 --> 00:44:03,673
with mass
and structural performance.
958
00:44:03,742 --> 00:44:07,677
NARRATOR:
Using carbon fiber instead
of heavier metal alloys
959
00:44:07,746 --> 00:44:10,647
reduces the rocket's weight,
allowing for more payload.
960
00:44:10,715 --> 00:44:13,082
BECK:
The rockets are
incredibly light.
961
00:44:13,151 --> 00:44:16,252
You can wheel it around
with no issues at all.
962
00:44:16,321 --> 00:44:18,488
The actual structures
and the tanks of the rocket
963
00:44:18,556 --> 00:44:20,089
weigh almost nothing.
964
00:44:20,158 --> 00:44:24,494
NARRATOR:
Rocket Lab has already put
24 cube sats into orbit
965
00:44:24,562 --> 00:44:25,928
on three flights.
966
00:44:25,997 --> 00:44:30,400
They hope their radically
cheaper carbon-fiber rocket
967
00:44:30,468 --> 00:44:33,903
will create even greater demand
for launch services.
968
00:44:33,972 --> 00:44:36,039
♪ ♪
969
00:44:38,943 --> 00:44:41,577
♪ ♪
970
00:44:41,646 --> 00:44:45,448
Hacking the rocket equation
can bring costs down--
971
00:44:45,517 --> 00:44:47,483
but only so far.
972
00:44:47,552 --> 00:44:51,320
So innovators are looking
at other ways to economize.
973
00:44:51,389 --> 00:44:53,956
For example,
974
00:44:54,025 --> 00:44:56,159
what if a rocket doesn't need
to take off from a launch pad,
975
00:44:56,227 --> 00:44:59,128
eliminating
the expensive infrastructure
976
00:44:59,197 --> 00:45:01,898
which accompanies all liftoffs?
977
00:45:01,966 --> 00:45:03,533
What if you could launch
to orbit
978
00:45:03,601 --> 00:45:06,936
from almost anywhere?
979
00:45:07,005 --> 00:45:09,205
Even from back of a truck?
980
00:45:09,274 --> 00:45:11,774
That's exactly what Delta
Clipper veteran John Garvey
981
00:45:11,843 --> 00:45:13,710
is trying to do.
982
00:45:13,778 --> 00:45:16,312
GARVEY:
We've designed the rocket
certain ways
983
00:45:16,381 --> 00:45:18,347
to make it simpler.
984
00:45:18,416 --> 00:45:20,516
We use a trailer, drive it
a mile or two to the pad,
985
00:45:20,585 --> 00:45:23,920
go vertical, and launch.
986
00:45:23,988 --> 00:45:26,122
We basically need a paved road,
987
00:45:26,191 --> 00:45:27,924
a concrete pad,
and, and some utilities,
988
00:45:27,992 --> 00:45:29,659
power and the internet's nice.
989
00:45:29,728 --> 00:45:36,432
♪ ♪
990
00:45:36,501 --> 00:45:39,035
NARRATOR:
By focusing
on really small satellites--
991
00:45:39,104 --> 00:45:42,171
under 130 pounds in weight--
992
00:45:42,240 --> 00:45:44,741
Garvey can reduce
the size of his rocket,
993
00:45:44,809 --> 00:45:49,846
allowing him to experiment
with much cheaper solutions.
994
00:45:49,914 --> 00:45:51,080
We use liquid oxygen
as the oxidizer,
995
00:45:51,149 --> 00:45:54,317
and we're using propylene
as the fuel.
996
00:45:54,385 --> 00:45:56,552
It gives us just enough
extra performance,
997
00:45:56,621 --> 00:45:59,856
a thrust on the order
of 20,000 pounds at liftoff.
998
00:45:59,924 --> 00:46:03,259
♪ ♪
999
00:46:03,328 --> 00:46:04,927
NARRATOR:
Garvey's rocket engines
might be puny
1000
00:46:04,996 --> 00:46:07,997
compared
to NASA's main SLS engine,
1001
00:46:08,066 --> 00:46:09,398
but they have the potential
1002
00:46:09,467 --> 00:46:12,769
to change the way
we launch very small satellites
1003
00:46:12,837 --> 00:46:15,204
in a very big way.
1004
00:46:15,273 --> 00:46:16,606
GARVEY:
Our job is to get to the point
1005
00:46:16,674 --> 00:46:19,675
where when we launch,
people don't even look up.
1006
00:46:19,744 --> 00:46:22,478
It's just like,
"Oh, yeah, okay, fine."
1007
00:46:22,547 --> 00:46:23,980
And we'll be truly successful--
1008
00:46:24,048 --> 00:46:26,182
we, collectively
as an industry--
1009
00:46:26,251 --> 00:46:27,283
when we're doing that,
1010
00:46:27,352 --> 00:46:28,951
and people barely look over
and say,
1011
00:46:29,020 --> 00:46:30,920
"Oh, yeah,
that's another Vector launch.
1012
00:46:30,989 --> 00:46:32,555
They do that all the time."
1013
00:46:32,624 --> 00:46:35,858
That's going to be the metric
that we are really establishing
1014
00:46:35,927 --> 00:46:36,959
we're hitting the numbers.
1015
00:46:37,028 --> 00:46:38,427
♪ ♪
1016
00:46:38,496 --> 00:46:42,265
NARRATOR:
Garvey imagines
a low-cost mass market
1017
00:46:42,333 --> 00:46:45,868
where rides to orbit
are as mundane as jet travel.
1018
00:46:45,937 --> 00:46:49,906
(engine roaring)
1019
00:46:49,974 --> 00:46:51,874
♪ ♪
1020
00:46:51,943 --> 00:46:54,377
Another way to reduce costs
to orbit
1021
00:46:54,445 --> 00:46:57,446
is to start your rocket
closer to space
1022
00:46:57,515 --> 00:47:01,818
by eliminating the need to
launch from the ground at all.
1023
00:47:01,886 --> 00:47:04,153
One company, Virgin Orbit,
1024
00:47:04,222 --> 00:47:08,057
thinks it can cut
launch-to-orbit costs down
1025
00:47:08,126 --> 00:47:12,295
by allowing the rocket to
hitch a ride partway to space.
1026
00:47:12,363 --> 00:47:14,096
Their CEO is Dan Hart.
1027
00:47:14,165 --> 00:47:16,766
♪ ♪
1028
00:47:16,835 --> 00:47:18,668
Well, Virgin has been working
on air-launch systems
1029
00:47:18,736 --> 00:47:19,902
for quite a while.
1030
00:47:19,971 --> 00:47:23,773
And so there's a whole
Virgin Galactic company
1031
00:47:23,842 --> 00:47:26,542
that is working
on space tourism,
1032
00:47:26,611 --> 00:47:30,012
where a spaceship comes off
of an aircraft
1033
00:47:30,081 --> 00:47:31,514
and takes tourists into space.
1034
00:47:31,583 --> 00:47:34,050
♪ ♪
1035
00:47:34,118 --> 00:47:36,219
And from that,
the discussion of,
1036
00:47:36,287 --> 00:47:37,687
"Well, what else
can we get into space,
1037
00:47:37,755 --> 00:47:39,856
and "How can we use similar
technologies?"
1038
00:47:39,924 --> 00:47:41,524
really rose.
1039
00:47:41,593 --> 00:47:44,894
NARRATOR:
Virgin Galactic's rockets
are designed to carry
1040
00:47:44,963 --> 00:47:47,396
a relatively heavy cargo
of humans
1041
00:47:47,465 --> 00:47:49,131
high enough to reach space,
1042
00:47:49,200 --> 00:47:52,134
but not fast enough
to get into orbit.
1043
00:47:52,203 --> 00:47:55,137
But by reducing the mass
of the payload,
1044
00:47:55,206 --> 00:47:57,073
a small rocket carried
to altitude
1045
00:47:57,141 --> 00:48:00,943
under the wing of a plane could
reach the speeds needed
1046
00:48:01,012 --> 00:48:03,446
to get to orbit.
1047
00:48:03,514 --> 00:48:05,681
So, it was an easy,
logical progression
1048
00:48:05,750 --> 00:48:07,016
to use those technologies
1049
00:48:07,085 --> 00:48:11,921
for the purpose of
taking satellites into space.
1050
00:48:11,990 --> 00:48:14,123
♪ ♪
1051
00:48:14,192 --> 00:48:16,626
NARRATOR:
Spinoff Virgin Orbit
1052
00:48:16,694 --> 00:48:19,595
has a fully reusable,
first-stage launch vehicle
1053
00:48:19,664 --> 00:48:23,766
in the shape of a repurposed
jumbo jet airliner,
1054
00:48:23,835 --> 00:48:25,301
christened Cosmic Girl.
1055
00:48:25,370 --> 00:48:28,271
HART:
Cosmic Girl is
the carrier aircraft.
1056
00:48:28,339 --> 00:48:30,873
She'll carry our rocket,
Launcher One,
1057
00:48:30,942 --> 00:48:33,409
to about 35,000 feet
1058
00:48:33,478 --> 00:48:36,579
and get close to Mach One,
the speed of sound.
1059
00:48:36,648 --> 00:48:39,048
Having altitude and velocity
1060
00:48:39,117 --> 00:48:41,817
is a good thing
for a rocket to start off with,
1061
00:48:41,886 --> 00:48:43,886
and it gives us
an initial boost.
1062
00:48:43,955 --> 00:48:45,187
That helps us,
1063
00:48:45,256 --> 00:48:46,789
because it allows us to make
the rocket smaller
1064
00:48:46,858 --> 00:48:48,658
and less expensive.
1065
00:48:48,726 --> 00:48:50,693
♪ ♪
1066
00:48:50,762 --> 00:48:52,895
NARRATOR:
Just like Vector and Rocket Lab,
1067
00:48:52,964 --> 00:48:54,997
Virgin Orbit's also chasing
1068
00:48:55,066 --> 00:48:58,100
the burgeoning
small-satellite market.
1069
00:48:58,169 --> 00:49:01,337
So, are there enough
new small satellite companies
1070
00:49:01,406 --> 00:49:05,708
to keep all these new
rocket companies in business?
1071
00:49:05,777 --> 00:49:08,911
FERNHOLZ:
The eternal bane
of all rocket companies
1072
00:49:08,980 --> 00:49:10,613
is making sure
there's enough cargo
1073
00:49:10,682 --> 00:49:12,214
for you to launch in the future.
1074
00:49:12,283 --> 00:49:15,084
And with so many rocket
companies forming right now,
1075
00:49:15,153 --> 00:49:16,919
it's not clear
that they'll all survive.
1076
00:49:16,988 --> 00:49:20,156
♪ ♪
1077
00:49:23,127 --> 00:49:24,927
♪ ♪
1078
00:49:24,996 --> 00:49:28,197
NARRATOR:
While these small-rocket
companies fight it out
1079
00:49:28,266 --> 00:49:32,301
to see who'll become king
of the micro-satellite market,
1080
00:49:32,370 --> 00:49:36,105
the bigger players--
like NASA, SpaceX, Boeing,
1081
00:49:36,174 --> 00:49:38,341
and Blue Origin-- grapple
with the challenges
1082
00:49:38,409 --> 00:49:42,778
of carrying immense payloads
into deep space.
1083
00:49:42,847 --> 00:49:45,247
FERNHOLZ:
Elon Musk and Jeff Bezos
are talking
1084
00:49:45,316 --> 00:49:48,250
about millions of people living
in space habitats
1085
00:49:48,319 --> 00:49:49,685
or colonizing Mars.
1086
00:49:49,754 --> 00:49:51,487
And even though it sounds crazy,
1087
00:49:51,556 --> 00:49:53,456
it is a difference
in their approach,
1088
00:49:53,524 --> 00:49:56,625
and it shows
in how they try and do things--
1089
00:49:56,694 --> 00:49:58,494
to be cheap, to be long-lasting,
1090
00:49:58,563 --> 00:50:02,098
to be infrastructure that can be
built on by the broader economy,
1091
00:50:02,166 --> 00:50:05,267
not just
a one-time military mission.
1092
00:50:05,336 --> 00:50:07,269
♪ ♪
1093
00:50:07,338 --> 00:50:10,806
NARRATOR:
Behind these ventures
is a common impulse,
1094
00:50:10,875 --> 00:50:14,243
one that drives some of us
to build rockets.
1095
00:50:14,312 --> 00:50:15,845
♪ ♪
1096
00:50:15,913 --> 00:50:17,947
LYLES:
We're all explorers.
1097
00:50:18,016 --> 00:50:20,983
We're departing
from low Earth orbit,
1098
00:50:21,052 --> 00:50:23,753
and we're going to go further
than we've ever gone before.
1099
00:50:23,821 --> 00:50:27,256
And I think that we're really
going to do this someday.
1100
00:50:27,325 --> 00:50:29,325
♪ ♪
1101
00:50:29,394 --> 00:50:32,862
NARRATOR:
SpaceX has announced
it is building prototypes
1102
00:50:32,930 --> 00:50:35,131
of its giant Starship rocket,
1103
00:50:35,199 --> 00:50:38,334
intended to ferry hundreds
of people to Mars.
1104
00:50:38,403 --> 00:50:41,070
♪ ♪
1105
00:50:41,139 --> 00:50:44,473
So could today's
"Rise of the Rocket"
1106
00:50:44,542 --> 00:50:46,675
really carry us all
to the stars?
1107
00:50:46,744 --> 00:50:49,178
CHRIS FERGUSON:
I really believe that, just like
1108
00:50:49,247 --> 00:50:52,681
we are now taking humans
to low Earth orbit commercially,
1109
00:50:52,750 --> 00:50:56,152
that pretty soon there will be
a commercial space station
1110
00:50:56,220 --> 00:50:57,420
in orbit as well,
1111
00:50:57,488 --> 00:51:01,023
which will be
the next destination.
1112
00:51:01,092 --> 00:51:03,159
So what I tell people is
1113
00:51:03,227 --> 00:51:05,895
"If you don't think you can go
to space today, just wait."
1114
00:51:05,963 --> 00:51:09,698
A hundred years ago,
when all there were
1115
00:51:09,767 --> 00:51:11,133
were biplanes
that didn't fly very fast,
1116
00:51:11,202 --> 00:51:13,269
the, the average person would
say,
1117
00:51:13,337 --> 00:51:15,371
"I will never fly an airplane."
1118
00:51:15,440 --> 00:51:16,539
So you have to think about,
1119
00:51:16,607 --> 00:51:18,741
"What's it going to be like
tomorrow?"
1120
00:51:18,810 --> 00:51:20,676
♪ ♪
1121
00:51:20,745 --> 00:51:23,379
NARRATOR:
A hundred years
after the first powered flight,
1122
00:51:23,448 --> 00:51:27,616
airplanes and air travel
are commonplace,
1123
00:51:27,685 --> 00:51:29,318
something we take for granted.
1124
00:51:29,387 --> 00:51:31,954
Will the same be true of rockets
1125
00:51:32,023 --> 00:51:34,623
a hundred years
after Goddard's first flight?
1126
00:51:34,692 --> 00:51:36,892
♪ ♪
1127
00:51:36,961 --> 00:51:38,994
Will this be the dawn of an age
1128
00:51:39,063 --> 00:51:43,999
that ultimately propels society
even further?
1129
00:51:44,068 --> 00:51:48,137
♪ ♪
1130
00:51:48,206 --> 00:51:50,639
(door opening,
locking into place)
1131
00:52:16,534 --> 00:52:19,068
To order this "NOVA" program
on DVD,
1132
00:52:19,137 --> 00:52:23,973
visit ShopPBS
or call 1-800-PLAY-PBS.
1133
00:52:24,041 --> 00:52:27,343
This program is also available
on Amazon Prime Video.
1134
00:52:29,380 --> 00:52:31,280
♪ ♪
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