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BBC Asteroid Impact Simulation End Of The World Predictions
A huge asteroid with a diameter of 500 Kilometer is going to impact on Earth! Destination: Pacific Ocean. The asteroid impact peels 10 kilometers crust off the surface of Earth. The resulting shockwave travels at hypersonic speed. The debris from the impact is blasted to the lower orbit of Earth, and they returns to destroy everything on the planet. The firestorm created by the asteroid impact encircles the Earth,
vaporizing everything in our world. Within 24 hours of asteroid impact, the entire Earth will be uninhabitable. The researchers have found that this scenario has happened 6 times in Earth's history.
The Lie We Live
At this moment you could be anywheredoing anything Instead you sit alone before a screen. So what's stopping us from doing what wewant, being where we want to be. Each day we wake up in the same room and follow the same path, to live the same day as yesterday. Yet at one time each day was a new adventure. Along the way something changed. Beforeour days were timeless, now our days are scheduled. Is this what it means to be grown upé To be freeé
But are we really freeé Food. Water. Land. The very elements we need to survive are owned by corporations. There's no food for us on trees, no freshwater in streams, no land to build a home. If you try and take what the earth provides you'll be locked away. So we obey their rules. We discover the world through a textbook.
For years we sit and regurgitate what we're told. Tested and graded like subjects in a lab. Raised not to make a difference in this world. Raised to be no different. Smart enough to do our job but not to question why we do it. So we work and work left with no time to live the life we work for. Until a day comes when we are too old to do our job It is here we're left to die Our children take our place in the game. To us our path is unique but together we are nothing more thanfuel. The fuel that powers the elite.
The elite who hide behind the logos of corporations. This is their world. And their most valuable resource is not in the ground. It is us. We build their cities. We run their machines. We fight their wars. After all, money isn't what drives them. It's power. Money is simply the tool they use to control us. Worthless pieces of paper we depend on to feed us, move us, entertain us.
They gave us money, and in return we gave them the world. Where there were trees that cleaned our air, are now factories that poison it. Where there was water to drink, is toxic waste that stinks. Where animals ran free are factory farms where they are born and slaughtered endlessly for our satisfaction. Over a billion people are starving despite us having enough food for everybody. Where does it all goé 70% of the grain we grow is fed to the animals you eat for dinner Why help the starvingé You can't profit off them. We are like a plague sweeping the earth.
Tearing apart the very environment that allows us to live We see everything as something to be sold. As an object to be owned. But what happens when we have polluted the last riveré Poisoned the last breath of airé Have no oil for the trucks that bring us our foodé When will we realize money can't be eaten, that is has no valueé We aren't destroying the planet. We're destroying all life on it. Every year thousands of species go extinct. And time is running out before we're next.
Can We Survive The Suns Death
The sun is around 4.5 billion years old, andjust like you and I, it's aging. In just over a billion years, the sun will have expandedso much that the heat will begin to melt the earth's surface. So, is there any way us Earthlingscan avoid this detrimental eventé Can we save ourselves from the suns ultimate deathé Sure, none of us will be here, assuming wedon't find the secret to everlasting life. But, at the billion year mark, the sun willhave used up the hydrogen fuel in its core, forcing it to burn at its surface. The increasedradiation will boil away all of the water on Earth creating an international desert.Flash forward about 5 billion years, and the
swelling sun will begin literally meltingmountains, with most, if not all life on earth now extinct. Around 7.5 billion years, theexpanding sun now a Red Giant will engulf the Earth entirely. Sounds bleak so canwe avoid this hot messé It turns out; our best bet lies in somethingcalled quot;Gravity Assistquot;. A technique we've been using for years, only to launch spacecrafts throughout our solar system. Anytime a spacecraft or satellite comes inclose proximity to a planet, gravity grabs hold. And if the spacecraft arrives at theperfect angle, it's able to use some of the planets velocity to catapult it further intospace. This 'extra' energy comes from the
planet's own energy of motion around the sun.But, as Newton famously said quot;To every action, there is an equal and opposite reactionquot;.As the spacecraft uses the Earths gravity to speed up and move towards Earth, the planetwill ever so slightly slow down and move towards the spacecraft. Of course, the spacecraft's mass is so small,comparatively, that it gets launched incredibly far, while the planet experiences little change.But, if we were to increase the spacecraft's size or use an asteroid we could potentiallymove the Earth's orbit away from the sun. This would take millions of years, and involvelarge objects coming just close enough to
not collide with Earth, but hey, we've gota billion year head start! It may seem farfetched, but it's alreadyhappening! On October 9th, 2013, Earth will be used to gravity assist a spacecraft calledJuno, which is on its way to Jupiter. As Juno flies within 559 kilometers of us, it willuse Earth's gravity as a slingshot to boost its velocity by 7.3 kms; Meanwhile, Earthwill have been moved by a fraction. Juno will later arrive at Jupiter, in 2016, where itwill study the interior of the planet and help to unveil many new spectacular mysteriesof our Solar System. In order to move the Earth within our billionyear timeline, we would need approximately
1 encounter every 6,000 years, using an objectwith a mass of approximately 10^19kg. That's 19 zeros somewhere around the size of a100 kmwide asteroid. In between passes, the asteroid would slingshot around the sun, flyout to Jupiter, and then be gravity assisted back to Earth like one long version of catchbetween planets. Over millions of years, this would move Earth to a comfortable 225 millionkilometer orbit out from the sun. And while it is feasible, even with today'stechnology, it doesn't come without risks. For one, we may lose the moon, which couldultimately create some extreme weather patterns. Not to mention, the Earth's spin may increase,making days only hours long. The surrounding
planets, like our new neighbor Mars, wouldlikely have their own orbits destabilized. And.you know.the asteroid could come plummetinginto Earth by accident. But, perhaps these are the risks we need totake to give our descendants, the planet and all life on it a few extra billion years. Got a burning question you want answeredéAsk it in the comments, or on Facebook and Twitter. And if you want to learn more aboutJunoé Check out its awesome interactive website we have linked in the description. Specialthanks to NASA for inspiring and supporting this episode, and subscribe for more weeklyscience tutorials.