The bottom ones are also potentially bad news for any other planets in our solar system that have been counting on Earth having a stable orbit.

https://explainxkcd.com/3049/

  • Semjaza@lemmynsfw.com
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    13 minutes ago

    I assume it varies with the density of the asteroid.

    And if we were using specifically shaped heat resistant metal rather than naturally forming ice/rock orbs it would burn up much less during re-entry too and impact with more tailored devastation, so the militarised artificial asteroid satellites could do bigger damage with smaller payloads.