Space Junk

OVERVIEW

Space junk is all the stuff that humans have left in Earth’s orbit, such as abandoned spacecraft, satellites, launch vehicle stages, and mission-related debris. As we put more and more stuff into space, there is a higher chance of this stuff colliding. Collisions of space junk create more and more pieces that can go on to cause more collisions, potentially enveloping the Earth in a wall of space junk. This could interfere with or even destroy operational spacecraft including satellites. If the problem becomes serious enough, we could lose the capability to launch anything into space to clean up the mess.

DANGERS

  • Space junk can cause serious damage to satellites and astronauts
  • The Kessler Syndrome could cause a chain reaction of debris that prevents us from launching into space for generations. No satellites means no TV, cell phones, GPS, weather and disaster forecasts, and more

CURRENT STATUS

  • There are >500,000 pieces of debris orbiting the Earth at up to 28,000km/h as of 2017
  • Many thousands of satellites are set to launch by 2025
  • Researchers are developing various strategies to deal with space junk such as space lasers and lassos

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