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  • We need to get the hell out of here.

  • The premise of the movie Gravity is that space debris hits the International

  • Space Station, it causes utter destruction which is a little unrealistic,

  • but that scenario is actually what people are scared of.

  • My name is Amber Yang I am 19 years old.

  • And I am a physics major college student

  • at Stanford University, I'm also the founder of Seer Tracking.

  • So we take the

  • data of current satellites and spacecraft and try to predict if there

  • will be any collisions with space debris.

  • So space debris is any defunct man-made

  • space part or spacecraft, that is orbiting in low-earth orbit right now.

  • They can be as small as a paint fleck to as big as a completely dead satellite.

  • And they often travel as fast as 17,500 miles per hour and you can only imagine

  • with something traveling that quickly that its impact on another orbiting

  • object will be extremely large

  • and will cause lots of damage.

  • This space debris

  • could have such a big impact on essentially the success of the American

  • space program and mankind's advancement into space technologies.

  • I watched this

  • series of videos that astronaut Scott Kelly published,

  • he would have to duck into

  • the Soyuz capsule which is an adjacent capsule to the International Space Station,

  • because there was fear that the spacecraft that he was in might be hit

  • by space debris.

  • We're just inside one minute from the

  • time of closest approach.

  • It first became like an issue around the

  • 1950's and really in the past few decades, that number has only skyrocketed.

  • There is a concept that, as the space debris collide with other space debris and

  • other objects,

  • that fragmentation will cause even more space debris to occur.

  • Currently the method for tracking space debris is extremely inaccurate at times,

  • because the orbit of space debris changes so quickly.

  • The method that I

  • have introduced is using artificial neural networks and artificial

  • intelligence to track space debris.

  • It will provide a prediction, it will say

  • I think this is where the space debris will be in this future point in time.

  • And if we find the actual point in time in the future where the space debris is and

  • there is an error metric between the artificial neural network and where the

  • space debris actually is,

  • we can tell the neural network that oh you're wrong by

  • this amount.

  • I am basically allowing the artificial intelligence to learn the

  • patterns of how the space debris positions are changing over time and it

  • will keep training itself until its predictions are actually very very accurate.

  • The primary concern would be for things already orbiting in space and

  • trying to allow these things orbiting in space to have enough time to move out of a

  • collision's way,

  • If my software predicts that there would be a future collision.

  • Another thing that it could be readily used for is predicting when is the best

  • optimal launch time for things like NASA and SpaceX,

  • when they're trying to find

  • a time window where to launch their rockets and other space cargo. They want

  • to look at a window where there isn't a lot of space debris.

  • Right now a lot

  • of people are putting space debris on the back burner, they're saying it could

  • be potentially very dangerous someday, but right now it's not that big of a

  • concern because we haven't really had any casualties yet.

  • But the very

  • terrifying version of the Kessler syndrome would be a space atmosphere so

  • trashed, that you couldn't launch anything up without it being hit by

  • space debris.

  • The whole goal is that we're trying to preserve our Earth, our

  • atmosphere for future generations in front of us and in order to keep

  • developing technologies that will succeed and go to space,

  • Thanks for watching.

  • Now if you're interested in what it takes to get into

  • outer space, head over to our sister site The Verge and watch Spacecraft with

  • Loren Grush.

  • Check it out and subscribe for more videos.

We need to get the hell out of here.

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この19歳は宇宙飛行士を宇宙ゴミから守ることができる (This 19-year-old can keep astronauts safe from space junk)

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    Evangeline に公開 2021 年 01 月 14 日
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