The moon’s oldest and largest crater didn’t form in the way astronomers thought, according to a detailed analysis of its shape, which would rewrite the moon’s early history. The South Pole-Aitken (SPA ...

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 ...

Two of Arizona's most famous landmarks may be linked by cosmic violence: the asteroid that gouged out Meteor Crater may have also caused the formation of an ancient lake in the Grand Canyon. This ...

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 ...

American astronauts who return to the moon’s surface in the years ahead for the first time in more than half a century will have the difficult and unprecedented task of setting the stage for a ...