Blowing-up asteroid to block out Sun could stop global warming – it’s happened before, say scientists

The Telegraph | Sep 18, 2019 at 6:00 PM
  • Around half-a-billion years ago, a 93-mile wide asteroid broke up between Jupiter and Mars sending a vast dust cloud into the Solar System, blocking sunlight and plunging Earth into a lengthy ice age.
  • The plan would involve towing or pushing an asteroid to a Lagrange point in space, where gravitational forces even out to provide a static ‘parking spot’.
  • The asteroid could then be drilled into, or blown up, to create an ‘anchored dust cloud’ shielding Earth from the Sun.