What If the Largest Asteroid Hit Earth?

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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?

00:00 Asteroids
1:37 Chelyabinsk
02:31 Chicxulub
03:46 Oumuamua
04:54 Bennu
05:30 Shoemaker-Levy 9
06:29 Ceres

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What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space and chance while we (hopefully) boil down complex subjects in a fun and entertaining way.

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