160 million years ago two asteroids beyond the orbit of Mars scientists believe might have caused the extinction of dinosaurs. William Bottke of the Southwest Research Institute in Boulder, Colo., said that collision sent fragments of rock hurtling across the inner solar system, doubling the rate of asteroid impacts on Earth, the moon and Mars for many millions of years. The di­no­saurs were vic­tim to one of many broken-up chunks of a once-bigger as­ter­oid, a group known as Bap­tis­tina family as­ter­oids, re­search­ers say. Frag­ments of that same rock have been pelt­ing Earth for eons, and we’re only about now at the  end of it now. The Bap­tis­ti­nas comes from the 180-kilometer wide Chicx­u­lub crat­er, long thought to be as­so­ci­at­ed with the di­no­saurs’ mis­for­tune.

Pretty interesting huh?