As astronauts prepare for south-polar landings, a new look at the Moon’s biggest crater points to a pivotal moment in lunar history—and to the rocks you’ll want sampled next. A study led by Jeffrey ...

Earth is still collecting scars from space, and scientists are only now learning to read them properly. Newly mapped impact ...

Researchers have discovered a large mass beneath the surface of the moon that is five times larger than the Big Island of Hawaii, according to a new study from Baylor University. It may be metal from ...