Latest / What If: Science, Theory, and Possibilities

What If the Largest Asteroid Hit Earth?
Some seriously large asteroids have threatened Earth before. Some of these asteroids have little chance of hitting us but there are a few with very real chances of making contact. What happens if a large asteroid or comet hits Earth? And what are the chances something like Oumuamua or Bennu could actually hit our planet?
Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community.
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The skinny
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