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how often do you think rocks falling
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from space land on people only one case
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in history has ever been officially
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confirmed although others have been
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reported on November 30th 1954 of four
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kilogram or nine pound meteorite crashed
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through the ceiling of 34 year old and
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Elizabeth Hodges home the stone bounced
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off the radio and hit the poor lady in
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the thigh leaving a huge bruise the
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probability of such a small meteorite
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hitting a person is negligible but it
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happened what if something larger fell
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to earth for example the largest
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asteroid in the solar system scientists
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estimate that there are now several
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hundred million asteroids one meter or
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3.3 feet or more in size in Earth's
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orbit every day about a hundred tons of
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them in the form of small grains of sand
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and small stones penetrate the Earth's
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atmosphere and burn up leaving a bright
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trail about 30 asteroids with a total
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mass of up to 2,000 tons fly directly
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towards Earth's atmosphere every year
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occasionally their fragments fall to
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Earth's surface in the form of
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meteorites more noticeable meteorites
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larger than 20 meters or 65 point 6 feet
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fall to earth no more than twice every
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100 years the last of these came down in
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the Chelyabinsk region in Russia in 2013
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once every thousand years objects like
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the Tunguska meteorite which was about
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75 meters or 246 feet in size reach the
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Earth's surface asteroids measuring more
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than a hundred meters or 328 feet land
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here even less often once every few
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thousand years the most gigantic
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asteroids whose dimensions exceed
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kilometers or miles crashed down onto
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our planet once every 100 million years
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but in this case they become the cause
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of global catastrophes in the extinction
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of species one of them probably
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destroyed the dinosaurs 65 million years
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ago if there were no wind rain and
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various geological processes on earth
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our entire planet would be dotted with
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craters as can be seen on the moon or
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mercury
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the remaining traces of space objects
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confirmed that asteroid impacts are not
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a fantasy at all the arrival of large
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stones remains only a matter of time
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scientists consider asteroids at least
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140 meters or 460 feet in size as the
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most dangerous at the same time they're
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mostly located no further than 7.5
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million kilometers or 4.6 million miles
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from the earth however it's very
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difficult to notice them after all they
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often clearly reflect sunlight have a
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flat shape and fly at a speed of 36,000
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kilometers or 22400 miles per hour for
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individual asteroids the speed can be
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noticeably higher therefore even the
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most powerful technology is far from
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capable of stopping all of them in time
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one of the most dangerous candidates
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will approach earth in October 20 28th
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1997 xf11 could fly past our planet at a
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distance of nine hundred thirty thousand
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kilometers or 580 thousand miles away
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this is so close that you could watch it
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with ordinary binoculars the size of the
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asteroid according to various estimates
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ranges from 700 to 1400 meters that's
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2,300 to 4,600 feet scientists claim
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that it's going to happen suppose
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something goes wrong and it changes its
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course straight for earth the collision
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speed of such a block with the surface
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of the earth would be about 48,000
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kilometers or
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thirty thousand miles per hour this
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would create an explosion of 1 million
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Megaton it's hard to imagine such a
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figure imagine that it partially burns
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out in the atmosphere or is divided into
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smaller fragments if an asteroid
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fragment the size of a one-story house
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crashes into earth at the same speed if
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power will be approximately comparable
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to the bomb detonated in Hiroshima about
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20 kilotons such a collision would raise
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every reinforced concrete building
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within a radius of 800 meters or 2,600
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feet from the impact of the asteroid
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everything made of wood within radius of
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2.4 kilometers or one-and-a-half miles
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would be destroyed if the length of the
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Fallen asteroid is comparable to a
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20-story building and is a little over
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60 meters or 200 feet wide the impact
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power will be close to the explosions of
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modern nuclear bombs that is
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approximately 25 to 50 kilotons this is
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enough to incinerate every reinforced
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concrete structure within eight
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kilometers or five miles from the point
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of impact consequently all living things
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on the site will also perish in the
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event that 1997 xf11 falls to earth as a
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whole the power of the explosion will be
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50 million times the power of the bomb
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detonated in Hiroshima everything within
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a radius of a hundred and sixty to 320
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kilometers or 100 to 200 miles will turn
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to ashes
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if the epicentre were for example in New
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York City then from Boston to Washington
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DC there would not be a single tiny
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living life-form remaining with the
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exception of super resistant bacteria
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the explosion will raise a huge amount
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of dust into the atmosphere forming
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clouds that will block sunlight from the
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Earth's surface they
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for anyone who survives is likely to die
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from a sudden cold snap if such an
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asteroid hits the ocean it will create
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enormous waves more than 30 meters or
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100 feet tall that will wash away
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everything on the nears coasts this
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asteroid is only one of the few
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potentially dangerous objects that could
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destroy life on Earth the largest and
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most dangerous is Series in 2006
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scientists changed its status from
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asteroid to dwarf planet Ceres has a
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diameter of about 945 kilometers or 587
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miles
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Discovery Channel employees created an
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animation showing the effects of a
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collision between Earth and Ceres
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according to their video first a shadow
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of the impending object would block a
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fairly large area of Earth from sunlight
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when it reached the atmosphere the
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asteroid would begin to burn then Ceres
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would penetrate deep into the planet
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creating enormous tsunamis
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the force of the collision would be so
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powerful that fragments of our planet
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would fly straight into space but they
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would not remain there for long the
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resulting stone fragments would rain
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down on every area of our planet the
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Himalayan mountains including the peak
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of Everest would be completely burned
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and turned into a plane it's unlikely
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that anyone would be able to survive on
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earth after such an impact fortunately
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in the near future a clash with Ceres is
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unlikely however this hypothetical
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experiment shows how fragile and
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vulnerable life on Earth is according to
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scientists from NASA to destroy all life
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on the planet a 10 kilometer or 6.2 mile
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asteroid is enough that is almost 95
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times smaller than Ceres
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a collision with a large asteroid will
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happen sooner or later researchers
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regularly searched for ways to avoid
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such a catastrophe the best way to do
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this is to change the trajectory of an
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asteroid or destroy it in space before
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it reaches us for these purposes
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NASA together with SpaceX planned to
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launch the Darden spacecraft
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its mission is to collide with the moon
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of the didymus asteroid which in October
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2022
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will be several million kilometres from
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Earth dart weighs 500 kilograms or 1,100
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pounds and measures 12 and a half meters
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by 2.4 meters or 41 by 8 feet the
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diameter of its moon is about a hundred
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and 50 meters or 500 feet scientists
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calculate that the spacecraft and the
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block of stone will collide at a speed
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of 6 kilometers or 3.7 miles per second
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this will allow them to determine
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whether a small collision can affect the
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orbit of an asteroid in any case the
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main thing is that after this experiment
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didymus and its moon will not be heading
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towards Earth because their trajectories
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are currently not in line with our
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planet in truth for each of us the
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chances of dying from an asteroid are
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pretty small they're even smaller than
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the probability of getting struck by
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lightning amounting to only one in
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280,000 but these statistics apply to
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the individual if we talk about the
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planet as a whole
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then the hazard coefficient increases
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asteroid 2010 RF 12 has the highest
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chance of colliding with earth one in 16
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it could come within 8.7 thousand to
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15,000 kilometers or 5,400 290 300 miles
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from the earth and in 2095 it could even
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crash into our planet fortunately it's
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not large enough to lead to global
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cataclysms however there are still many
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other giant boulders in space flying
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past earth at a dangerously close
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proximity
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in your opinion will technology be able
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to fully protect us from collisions in
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the future let us know in the comments
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if you liked this video give it a thumbs
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