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SUB BY : DENI AUROR@
https://aurorarental.blogspot.com/
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We saw the movie, a huge asteroid heading towards Earth.
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Collides with the atmosphere, crashing into the surface.
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To send a massive fireball, a deadly shock wave.
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The earth groanes dying.
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But this is not one of those films It is about how to repel Earth and humans.
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To stop the end disaster.
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The ways the universe works.
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Planet earth.
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The cradle of life, floating comfortably through space.
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Or so we think.
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Our planet may be the toughest spots in the universe.
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Think about the natural disasters that have happened to humanity.
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Earthquakes, volcanoes, hurricanes and the like.
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We cannot stop it.
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But the asteroid, that's a disaster Huge natural we can prevent.
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When do people hear the word �asteroid�? These fantasy movies about the dangerous asteroids that hit us.
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The story of the reason for the extinction of the dinosaurs.
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There are, of course, some dangerous asteroids.
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When it comes to searching for asteroids And defend the Earth, the scientists are the heroes strongly.
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Across the world, Hama teams search The planet finds ways to prevent disaster.
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... they wipe the sky.
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... they do the math.
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... are designing technology.
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They make plans to confirm that extinction The planet from space is nothing more than science fiction.
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If you want to face an opponent You need to know a lot about him to defeat him.
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Its size, strength, and what is composed and how it moves, on us Knowing the same things about asteroids if we wanted to defeat them.
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To better understand this discount.
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Cathy Plesco from Los Lab Alamos National by traveling to Arizona.
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Fifty thousand years ago, this was a point Collision leaving a crater approximately 550 feet deep.
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This is a meteor crater.
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It is amazing to stand on the edge of a crater Like this and I see the size of something as big.
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I feel young and trying to understand the amount of energy Necessary to break that huge amount of rock.
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The meteor that made the crater hit the force of a hydrogen bomb.
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But it was a space rock Just thirty feet wide.
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The meteor crater helps to understand how it is performed Speed ??turns a small shell into a killer.
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The asteroid came at a speed of 27 thousand miles per hour.
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It's ten times the speed The bullet fired from the gun.
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It hit the surface and exploded.
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This blast broke the crater.
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The collision transformed the surrounding solid rocks To dirt, send a massive shock wave rushing out.
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The wind here is stormy but incomparable Shock wave of impact.
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Whoever is close will see winds of about thousands Miles per hour when the shock wave came.
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Scientists have concluded that there is 20% chance of such a collision on Earth every century.
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If an asteroid hit us today, it would uproot a city.
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But Kathy�s research helps us strengthen our defenses.
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We believe there are various ways to prevent An asteroid from hitting Earth.
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My colleagues and I are in "Los Alamos, Livermore and other places.
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We use computer models on computers Ultra high-performance simulation.
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Good ideas tell us whether or not We can present it to decision makers.
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Here is what we might do by comparison With what Bruce Willis could do.
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The most powerful weapon in our defensive arsenal is the nuclear bomb.
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Blasting the asteroid in this way has the disadvantage.
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He risks raining the ground with hundreds of smaller meteors.
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But Cathy works On plans to avoid that risk.
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On the other hand, they use weapons Nuclear to change the course of the asteroid.
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Someone is studying nuclear deviation.
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In some cases and in the near future it may be There is a possibility that we need to block a huge object through us.
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And those things, if they were huge, were lost We need to use a nuclear weapon to do this.
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We may launch and detonate a nuclear weapon Above the surface of the body, to slightly change its velocity.
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Nuclear weapon detonation near an asteroid Vaporizes part of its surface and changes its path.
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But detonating a nuclear weapon in space is not the first option.
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There are some advantages and disadvantages to using nuclear deviation.
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There are some situations where that is The right technology and the only option then.
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But we hope that in the future we will have other means At our disposal, it is not difficult diplomatically or politically.
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Scientists are racing to find a way to change course Asteroid without using nuclear weapons.
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We discover and understand more and more about asteroids.
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We realize that there are ways to reduce it The devastating effects of hitting the ground.
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This may be the most important attempt Scientific carried out by humans.
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The best way to stop asteroid disaster Get rid of it before it becomes a threat.
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Our solar system is dangerous.
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Fast asteroids rush through space.
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Many of those rocks get in our way.
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To resist the asteroid threat Scientists draw up battle plans.
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The first step to understanding this danger And stop him is to search for her.
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Not the big one that could destroy our civilization But the little one that might destroy your city.
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At the top of the mountains in Our Catalan to Clear the Sky in Arizona.
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The asteroid hunter "Craig Leonard "led the search.
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We are the guards of the world that night With this telescope on top of this mountain.
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Comparing four pictures of the same patch from the sky Which was captured over twenty minutes.
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Craig can track asteroids Hidden interstellar.
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Because in those pictures no The stars move, but the asteroids.
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If it were a bright asteroid we would see points Shiny light shines through the four images.
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You must try a lot before finding One of them, and this is how it is every night.
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Here we are, it is a real body.
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You can see him moving across the sky Here from bottom right to top left.
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I'm cheerful to discover an asteroid tonight Because it is an object very close to Earth.
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Craig's research reveals that this asteroid has a hundredth A foot may approach 630 thousand miles from Earth.
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This is less than three times the distance to the moon.
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And in the future this orbit may be approaching The asteroid from Earth even to a collision course.
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If this happens, we must prepare for it.
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The more we spotted it, the sooner We have a better chance of changing course.
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The space is very roomy and the floor is very small.
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If we detected the asteroid from afar.
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We slightly changed its course with a slight pinch and correction. A slight pathway:when it reaches the Earth's location, it will completely destroy us.
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To do this, we have to change the asteroids off course.
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Imagine golf, changing course The one-degree ball loses the target completely.
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Measure it on asteroids.
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Over time, you can leave Asteroids track in the asteroid belt.
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To become dangerous objects near the Earth at a distance Thirty million miles may hit our planet one day.
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But if the planet�s protectors could change The path of the dangerous body is one tenth of a degree.
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You will avoid the ground completely.
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Scientists have devised a straightforward way to do this.
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In football, if defenders see the back The back runs towards the finish line, so what do they do?
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They collide with him, push him off the field and drop him.
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This is what we want to do with asteroids.
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If we send something moving towards the asteroid quickly, Great for hitting it, we call it kinetic jumper.
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He hits him hard, and doesn't change speed Not only the asteroid, but also its path.
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Scientists have already made an objection Asteroids-like objects in space.
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2005.
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The Deep Impact vehicle has arrived Temple-1 is guilty of half the size of Manhattan.
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The vehicle launched a probe small on the comet like a projectile.
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She hit "Temple-1." Like a shell to detonate materials from the surface.
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The search continues with kinematics.
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In 2022, a vehicle called Dart will collide With an asteroid at a speed of about 13,000 miles per hour.
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Transmission of that driving force It will change the asteroid�s speed slightly.
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Perhaps part of an hour.
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But over the course of a decade, this change in speed, even though it was little, will work To change its position to a large degree enough to avoid the Earth completely.
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Hitting a huge space rock To change its course may seem unusual.
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But astronomers have discovered that this happens a lot in space.
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If there is a traffic jam on a highway and a lot From lane changes, collisions will happen sooner or later.
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This happens in our solar system as well.
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The asteroid belt is very crowded.
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Asteroids hit each other at relative velocities, which are close to several Miles per second, and when that happens, sparks fly.
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If we started with two asteroids and collided Suddenly, they produce ten asteroids.
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That ten will collide with each other again to produce a hundred asteroids.
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These asteroids will hit each other to produce thousands And millions and billions of potential jams to the ground.
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But that war is not just a game of numbers Because asteroids do not all consist of the same substance.
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We will need different weapons for each type.
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Across the world, planet protectors are developing arts Fights to protect us from a large asteroid collision.
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But there are millions of asteroids in the system Solar and all of them represent a danger of some kind.
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Its speed, size and distance from Earth helps determine the degree of danger.
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The more we talk, the greater our understanding of the asteroid We were better equipped to be able to defeat him.
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It is the issue of knowing the enemy.
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We need to know something about their properties Crime let us keep the danger out of our way.
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But scientists realize that synthesis The asteroid may be the most deadly factor.
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Knowing the composition of the asteroid will help us Looking for weakness in her shield.
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Marina Brasovich from the Center for Near Eastern Studies The Earth uses technology developed during World War II.
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Radar.
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Planetary radars are very similar to airport radars.
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Airport radar also tracks Planes we are tracking down asteroids.
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That is hundreds of thousands away from us And maybe millions of kilometers.
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Radars also tell us Also what this asteroid looks like.
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We want to know its size, shape and chemical composition.
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Given the details that we see On the roof and under-transmission of vehicles.
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This cannot be achieved, so it is counted Radars are our space mission.
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Radars show that asteroids may form Of rocks or minerals or a mix between them.
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This is important information for how we deal with it.
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Metal asteroids are much denser From the usual rocky asteroids.
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Collisions from a huge iron asteroid might generate energy Much more than just a rocky asteroid the same size.
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It also caused the metal shell Damage greater than a rock of the same size.
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Metal asteroids may be More deadly than rock asteroids.
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Scientists have now discovered that most asteroids are less similar With metal shells, I resemble the cosmic bullets a lot.
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Most asteroids are not an object One compact and even aggregates of gravel.
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It consists of many smaller rocks Gravel, grains and parts of sand.
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All of them bind gravity together tightly.
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Gravel asteroids, such as "itkawa" in the form of a pill Beans may have formed violent collisions between asteroids.
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Initially rocky scatterers scatter Such collisions are as fragments.
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Then the gravity that controls each other Rocks tie them together again without tightening.
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The structure of the asteroid asteroid represents A huge challenge for our planet protectors.
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How can science heroes be Save us from a pile of stones?
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If the body had a solid mass of metal it would respond to collision or Blast in a completely different way than if it were piles of gravel.
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They are linked together by gravity without tightening.
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They are very fragile bodies and need special considerations.
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We cannot necessarily collide with it.
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Colliding with gravel asteroids It is like scattering a pile of leaves.
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Thousands of smaller rocks will push in every direction.
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It will not be monitored or predicted and you may continue to rush towards us.
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But we have a plan.
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Instead of using brute force We can use a slight gravitational pull.
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Instead of this clumsy approach to hit and get away We just need something more careful and more precise.
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And here is where the gravity locomotive comes.
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Piles may be rocks Small but attractive.
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For example, if we send a probe that has a mass of tons, it would be It has attraction too, not so big, but it does exist.
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If we bring it closer to the asteroid, we can use gravity Mutual, attraction between them, to flatten the asteroid into a safe orbit.
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All we need to park a vehicle Next to the asteroid and hover over there.
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And don't let the asteroid and spacecraft pull together.
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And let the vehicle's gravity work As a rope to pull the asteroid off its path.
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It may sound like a science fiction, however That physics is simple and we can do it.
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But the gravity locomotive only works if We tracked the movement of those asteroids precisely.
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The problem is having a giant Complex in the middle of our solar system.
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the sun.
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Planet protectors want to stop the end disaster.
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Their mission is to protect the earth from collisions Asteroids that seem inevitable.
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But to do so, they need to predict all their steps.
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In an ever-changing solar system, this is not easy.
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We measure their orbits and can draw Maps of their orbits as we see them today.
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But we know that it is not a fixed group, but a moving one Things are constantly changing in the asteroid belt.
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Asteroids are not just about size Understanding density, orbit, and speed until we deal with them.
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Collisions may work to develop Asteroid furrows in new orbits.
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But there is another factor, gravity The colossal gas giant Jupiter.
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Jupiter is the largest body in the solar system.
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He sits outside the asteroid belt.
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Its gravity can pull those asteroids And make their orbits more oval.
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To send it toward the sun, crossing the Earth�s orbit.
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Simulate Jupiter's impact on millions Asteroids are very difficult.
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Now add some effect The largest collars in the asteroid belt.
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Rocks three hundred miles wide Like Vista and Palace.
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The difficult task becomes almost impossible.
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But gravity is not force The only ones to make orbits mess.
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This is a "pino" asteroid, and there is an opportunity In the year 2700 he hit the ground.
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But the Pino orbit is constantly changing.
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In the past 18 years, acute Its path is more than a hundred miles.
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And the sun may be the culprit.
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What can change the orbit of an asteroid?
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It's easy to think that those are huge rocks Some of them are pulling together, attractively.
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But would it be the most powerful effect? Because of something as slight as sunlight?
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Its effect may be very slight.
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But sunlight on our bodies exerts a slight pressure.
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The fact that one of your sides is hotter From the other it is a batch that may move.
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Sunlight consists of bundles A small amount of energy called photons.
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When photons collide with the asteroid, they are transported A small amount of driving force and heat.
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Imagine this situation here.
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Here is our asteroid.
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It may really be a showcase Ten miles or miles or the like.
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Here is our asteroid, and here is the sun.
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The asteroid revolves around the sun in this way.
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This face heats up from The asteroid is caused by heat from the sun.
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Here the back face is Because the cold space is cooler.
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I really feel it with my own hands.
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The warm face that draws light from the sun restores it Distribute that heat in the infrared spectral segment.
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All of this radiation is from infrared The side of the asteroid somehow acts as a rocket motor.
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He pushes the asteroid.
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This is known as the Yarkovsky influence.
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It is a slow process.
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The asteroid is propelled with equal force Weighed a few grapes on the ground.
225
00:25:37,825 --> 00:25:43,393
But when Pino turns Around the sun, it heats one side.
226
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What drives it to a different orbit.
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Yarkovsky influence is a problem.
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00:25:52,947 --> 00:25:58,384
If gravity alone affects those asteroids We would have expected the location of all asteroids and planets.
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We got to know the course of that Asteroids for many years to come.
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But this changes with the influence of Yarkovsky In a way that makes it difficult to predict.
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It depends on the extent of the opacity The asteroid, even though it rotates and what its shape is.
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It makes the orbit of the asteroid difficult Prediction in the distant future.
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The Yarkovsky Effect makes movement predictions Asteroids like "Pino" are more difficult.
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00:26:27,430 --> 00:26:32,084
But the protectors of our planet are adept.
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00:26:32,084 --> 00:26:37,735
And they try to use the Yarkovsky effect To create a new weapon in their arsenal.
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Know that the effect of Yarkovsky It changes the orbits of asteroids a lot.
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It is an effect that we can use To move the asteroid by ourselves.
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If we could change the way the sun warms the asteroid Change its color or change its shape to heat in a specific way.
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We can change its orbit in this way.
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If scientists could send Satellite to the asteroid.
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He can use black paint or White to increase or decrease the heating effect.
242
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But at the University of Southern California.
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A team of scientists is working on a high-tech solution.
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They want to outrun the influence of Yarkovsky Using a space laser called "D-Star.".
245
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Imagine seeing an asteroid heading towards Earth.
246
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We can use a space laser to hit the asteroid.
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We vaporize the surface material that is Turn into a rapidly expanding gas.
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This works as a missile so we can use it To push the asteroid onto a safer path, too.
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Space lasers are another powerful weapon for Hama Our planet who are fighting asteroids.
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It joins the gravity locomotives.
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Kinematics.
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And nuclear weapons in the arsenal.
253
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But there is a big problem.
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All defense against asteroids That we mentioned is technically possible.
255
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The scary problem is that it is not ready yet.
256
00:28:23,999 --> 00:28:26,246
It is not time to stop the end catastrophe yet.
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We have made a lot of progress, especially in The past few years, but we haven't achieved it yet.
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But we may reach that stage Maybe after ten or fifteen years.
259
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But do not be afraid.
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The Earth has a built-in defense that can burn Asteroids before they even hit the surface.
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Arizona.
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June 2, 2016.
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A five-foot-wide rock rushing towards the ground.
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It moves at a speed of about forty thousand miles per hour.
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As it rushes over the heads, it illuminates the sky.
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Early in the morning, an asteroid exploded with a shell The Earth quickly far exceeds the shotgun.
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00:29:39,399 --> 00:29:44,098
There was a fireball lit up Red rocks around us at night.
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It was shiny enough to burn NASA machines to photograph on Earth that we used to observe fireballs.
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The asteroid was seconds away from Collision and major damage seemed inevitable.
270
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But the asteroid did not reach the surface, why?
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We have a natural inhibitor against shocks At least the small asteroids.
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And let me allude to you.
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The air around us appears thin It repels a danger from space.
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But the atmosphere is actually Another line of defense in front of asteroids.
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One day he will be able to protect our planet From saving us from asteroid strikes.
276
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But then, we need to count ... on the built-in ground defense system.
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Atmosphere.
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We know for a fact that our atmosphere acts as a protective shield.
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Because asteroids come to Earth every day.
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Some are small, some are slightly larger.
281
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But what happens is when you enter the atmosphere At high speed, the friction burns.
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Although the upper layers are thin, It is extremely dense in comparison to the vacuum of space.
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When rock asteroids rush through the atmosphere.
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Friction and air pressure heat it up To more than 3000 degrees Fahrenheit.
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The larger the asteroid, the longer it takes to burn.
286
00:31:25,824 --> 00:31:31,831
For those huge rocks The effects can be significant.
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If there was a big rock in it It suffices, do not burn quickly.
288
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We call it the explosive meteor, and when the meteor falls across The casing makes a great show we call it Fireball.
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In February 2013.
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Chelyabinsk in Russia was hit by a fireball.
291
00:31:50,643 --> 00:31:55,018
When a space rock went off 60 feet across the sky.
292
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This asteroid was bigger than a school bus.
293
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And it sped off eleven miles per second.
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It was heavily heated, disintegrating into small portions.
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Then those parts penetrated the atmosphere.
296
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When all that kinetic energy is transferred For that rock to light and heat it exploded.
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The meteor "Chelyabinsk" is the largest natural body has ever been Seeing him enters the atmosphere for more than a hundred years.
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It exploded twelve above the ground Miles of thirty nuclear bombs.
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The explosion caused one thousand five hundred Injured and damaged seven thousand buildings.
300
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If the protective shield does not exist for our cover The results would be worse.
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The problem is that the cover will only protect us From rocky asteroids and rubble heap.
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Up to about a hundred feet wide.
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And there is something more dangerous to bear in mind.
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Metal asteroids.
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If we were hit by a rock asteroid or Pebble will not reach the ground.
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The asteroid is one hundred feet wide It almost explodes in the sky.
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If a metal asteroid collided with us a hundred feet wide.
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It will not warn us in the first place.
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It will hit the top layer Then it hits the ground a second later.
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To cause a massive explosion It creates a nozzle approximately one mile wide.
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Buildings will be razed to the ground and millions die By the shock wave propagating.
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A layer of dust falls again on The next minutes and hours.
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The metal asteroid penetrates into the atmosphere.
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Difficulty to make friction And compress the air completely.
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It hits the ground in a catastrophic explosion.
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Metal asteroids may be The deadliest enemies of the planet�s protectors.
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But it is clear that the Earth has another compact defense.
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00:34:35,539 --> 00:34:41,238
We know that an asteroid penetrated the atmosphere and annihilated dinosaurs.
319
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But research shows that our planet may have saved it.
320
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Dinosaurs were totally unlucky.
321
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Even if the asteroid broke through our cover We still have a line of defense.
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The composition of the asteroid is not always the difference.
323
00:35:02,655 --> 00:35:08,390
Sometimes it comes to where he hits you.
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Our planet�s protectors are creating technologies To change the course of a catastrophic asteroid.
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But until their arsenal is complete The Earth has its own defense methods.
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00:35:45,887 --> 00:35:50,735
One of the sure things is that an asteroid or asteroid will shock us.
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Maybe it will not happen for millions of years, but it will happen.
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On this day, what will differentiate between that It is a hard day or a global catastrophe.
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Its location, location, location.
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Some regions of the Earth can reduce From the damage caused by the deadly asteroid.
331
00:36:13,046 --> 00:36:15,530
How do we know that?
332
00:36:15,542 --> 00:36:16,959
Dinosaurs.
333
00:36:17,159 --> 00:36:18,490
65 million years ago.
334
00:36:18,490 --> 00:36:28,773
The luck of the dinosaurs was bad, it was They were lucky to be annihilated by an asteroid collision.
335
00:36:29,636 --> 00:36:31,846
We thought we knew the whole story.
336
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But the researchers showed something amazing.
337
00:36:37,767 --> 00:36:47,638
If the asteroid hit the Earth just minutes later Dinosaurs would still roam the Earth today.
338
00:36:49,244 --> 00:36:50,896
but how?
339
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This body collided On the Yucatan Peninsula.
340
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The latest giant tsunami flooded North America.
341
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But he also threw a lot of sulfur in the air.
342
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Land the asteroid with a width Six miles in shallow seas.
343
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Which is now the Gulf of Mexico.
344
00:37:12,518 --> 00:37:16,872
He evaporated rocks on the sea floor of the continental shelf.
345
00:37:17,451 --> 00:37:22,699
The collision detonated trillions of tons From gases to the atmosphere.
346
00:37:23,769 --> 00:37:26,952
To provoke a catastrophic climate change.
347
00:37:27,152 --> 00:37:35,307
Seventy percent of all are extinct Live on Earth, including dinosaurs. three hundred fifty 00:37:35,407 --> 00:37:41,081 This is heartbreaking because if the earth rotates A little more when a collision occurs.
348
00:37:41,081 --> 00:37:46,933
He would have been in the deepest ocean and would not have produced it All these evaporated rocks and sulfur.
349
00:37:50,668 --> 00:37:54,410
Our planet rotates at a thousand miles per hour.
350
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Oceans cover seventy percent of the Earth's surface.
351
00:38:01,488 --> 00:38:07,769
With some luck, I hit a destroyer Dinosaurs with deeper water.
352
00:38:07,969 --> 00:38:13,854
There is no good place on the ground that could blow An asteroid five miles wide, there is no good place.
353
00:38:13,854 --> 00:38:15,314
There are spots worse than others.
354
00:38:15,314 --> 00:38:20,813
And the Yucatan peninsula is this much Sulfur was the worst possible place.
355
00:38:21,013 --> 00:38:23,970
It was not a good day.
356
00:38:26,363 --> 00:38:31,940
The asteroid that killed the dinosaurs was allowed Ours - mammals - dominate the Earth.
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Fortunately, those asteroids are hitting Giant once every few million years.
358
00:38:39,495 --> 00:38:49,840
But every 2000 years, you make a rock of a size A soccer field crashing to the ground.
359
00:38:50,040 --> 00:38:56,995
What happens when one of these asteroids does Smaller common colliding with the ocean?
360
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If you envision the Pacific Ocean, there is a long coastline.
361
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Thus there are many people at risk.
362
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Most of the Earth's surface is oceans.
363
00:39:05,685 --> 00:39:10,252
The possibility is that the asteroid will crash into the ocean.
364
00:39:10,252 --> 00:39:15,129
The question is how dangerous is the resulting tsunami?
365
00:39:16,885 --> 00:39:24,181
Scientists have simulated what would happen if An asteroid collided with various regions of the ocean.
366
00:39:24,994 --> 00:39:32,496
Study in 3D with different types of structures And different depths of the ocean and different entry angles.
367
00:39:32,496 --> 00:39:37,834
And we realized that the continental shelf was already saving us.
368
00:39:39,637 --> 00:39:47,101
The continental shelf is an underwater ground block It stretches nearly fifty miles off the coast.
369
00:39:47,301 --> 00:39:53,971
When an asteroid hits a width Hundreds of feet deep into the ocean.
370
00:39:53,971 --> 00:40:02,329
The shallow sea made by the continental shelf The tsunami may weaken before it hits land.
371
00:40:02,529 --> 00:40:07,119
It looks like the ocean has our defense.
372
00:40:07,319 --> 00:40:15,437
As for the depth of the ocean, we think it's the smallest asteroid 400 feet wide, which is large, will not cause a tsunami hazard.
373
00:40:15,437 --> 00:40:19,296
No need to worry as we were worried about him.
374
00:40:20,124 --> 00:40:26,339
This shallow part of the water Dilute any upcoming tsunami.
375
00:40:32,733 --> 00:40:36,267
So our planet has defensive mechanisms.
376
00:40:36,267 --> 00:40:42,938
Our scientists devise plans to transfer the confrontation to asteroids.
377
00:40:43,138 --> 00:40:47,356
They only need time.
378
00:40:48,522 --> 00:40:55,780
Astronomy can save the world because we are observing All the asteroids that might hit Earth one day.
379
00:40:55,780 --> 00:41:00,954
And if we find it, we can Avoid the annihilation of civilization.
380
00:41:00,954 --> 00:41:05,400
If we have a warning time we have Advantage of being able to think about the problem.
381
00:41:05,600 --> 00:41:09,076
Planning and building technologies.
382
00:41:09,076 --> 00:41:12,015
And training in the required technologies To push this asteroid through us.
383
00:41:12,015 --> 00:41:13,979
Time is our ally.
384
00:41:15,765 --> 00:41:19,224
We are not ready to prevent the end disaster yet.
385
00:41:20,361 --> 00:41:28,892
But by taking on the protection teams of the planet The case we have a chance to fight.
386
00:41:29,092 --> 00:41:34,535
If you want to know the worst nightmares Astronomers would be an asteroid collision.
387
00:41:34,535 --> 00:41:36,583
It is personal.
388
00:41:37,433 --> 00:41:40,190
It happens here on the ground.
389
00:41:40,390 --> 00:41:45,430
It is a challenge for us and for this we want to prevent it.
390
00:41:45,630 --> 00:41:50,782
The good news is that we are on the cusp That we can change course.
391
00:41:50,782 --> 00:41:54,429
Once we get there, we have to go ahead.
392
00:41:56,390 --> 00:41:58,332
The planet is very flexible.
393
00:41:58,532 --> 00:42:07,489
Even if there is a weak or A weak person, the whole earth is strong.
394
00:42:07,689 --> 00:42:14,415
It is up to us humans to be our will to discover, explore and understand the Solar System.
395
00:42:14,415 --> 00:42:17,396
It becomes important when we think about asteroids.
396
00:42:17,596 --> 00:42:23,897
We have to keep wiping the sky, though Scientists stayed until we defended the Earth.
41959
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