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2021-06-09: Are We Running Out of Space Above Earth?

  • 05:53: This is another positive feedback loop - orbital decay accelerates until the satellite finally burns in a glorious blaze of re-entry.
  • 06:18: That’s annoying, but orbital decay is the most important process for cleaning low-earth orbit of defunct satellites and debris.
  • 06:26: Ultimately, the Kessler Syndrome can be avoided if orbital decay cleans up low-earth orbit faster than new launches and new collisions fill it.

2016-02-11: LIGO's First Detection of Gravitational Waves!

  • 02:40: Now we've seen this slow orbital decay in binary neutron stars.
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