If an asteroid like this one, depicted in an artist's drawing, hit Earth's oceans, it could generate huge waves that would move more slowly than previously thought, but in the end, cause more damage. Asteroid Tsunamis Could be Huge, Slow By Larry O'Hanlon, Discovery News normalize font | increase font June 7 — Just when you thought it was safe to go in the water, a new supercomputer model predicts that meteors and asteroids splashing down in the oceans can create waves twice as big, but slower moving, than previous estimates. In other words, if Earth gets walloped...