Colliding asteroids may have caused an ancient ice age - Astronomy Magazine
- Colliding asteroids may have caused an ancient ice age Astronomy Magazine
- ‘Insurance policy for planet Earth’: Space agencies to smash spacecraft into asteroid at over 14,000 mph RT
- Asteroid dust may have triggered massive explosion of life on Earth 466 million years ago Fox News
- Gigantic asteroid collision 470 million years ago caused Earth to freeze over, scientists say The Independent
- We’re going to slam a spacecraft into an asteroid to try to deflect it MIT Technology Review
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