Moon rocks with faraway origins

Published On: Mar 26 2013 10:12:30 PM EDT   Updated On: Mar 26 2013 06:37:17 PM EDT

Comparing the moon rocks brought back from the Apollo missions to howardite and eucrite meteorites, researchers have determined that an event known as the lunar cataclysm 4 billion years ago peppered both the moon and a far-off asteroid.