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  1. ウェブ2019年11月7日 · Space junk is any debris left by humans in space, such as dead satellites or rocket parts. Learn how it gets into orbit, what dangers it poses to space exploration and how we can clean it up.

  2. スペースデブリ - Wikipedia

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  4. 宇宙ゴミの問題:宇宙ゴミの恐ろしさ | スペースデブ …

    ウェブ2022年9月26日 · スペースデブリ(または宇宙ゴミ、英語:space debris、space junk)は人間が宇宙に残した不要な物体または物質です。例えば、運用が終了した人工衛星の破片などです。宇宙で見つかったオブジェクトの例を次に示します。

  5. 他の人はこちらも質問
    What's more, there are around 34,000 pieces of space junk bigger than 10 centimetres in size and millions of smaller pieces that could nonetheless prove disastrous if they hit something else. The world's first satellite, Sputnik 1, was launched by the Soviet Union on 4 October 1957.
    This is an idea proposed by NASA scientist Donald Kessler in 1978. He said that if there was too much space junk in orbit, it could result in a chain reaction where more and more objects collide and create new space junk in the process, to the point where Earth's orbit became unusable.
    Space junk, or space debris, is any piece of machinery or debris left by humans in space. It can refer to big objects such as dead satellites that have failed or been left in orbit at the end of their mission. It can also refer to smaller things, like bits of debris or paint flecks that have fallen off a rocket.
    Junk gets into space the same way junk gets anywhere: people put it or leave it there. Sometimes debris ends up in space because of a rocket launch or because no one bothered to bring down a decommissioned satellite. Other space junk gets there because of an accident. In 1965, two satellites exploded, generating nearly 500 pieces of debris.
  6. What is space junk? | McKinsey

  7. ESA - The current state of space debris - European Space ...

  8. 「宇宙ゴミ放置」で初の罰金、デブリ除去市場活性化に期待も

  9. ウェブ2018年9月5日 · How to avoid collisions and clean up orbits as more satellites are launched into space? Learn about the history, challenges and innovations of space debris research and management.

  10. NASA Study Provides New Look at Orbital Debris, Potential ...

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