Even though humans have pondered the moon since the first of us looked skyward, there is still much we don't know about it.

Two canyons that splay out from a vast asteroid crater on the moon may have been quickly formed by chains of impacts that followed the initial one ...

The icy shell of Titan, Saturn's largest moon, may possibly contain a six-mile-thick layer of methane ice beneath its surface. The methane layer could make it easier to detect signs of life from ...

The area containing the clay-bearing mounds is geologically connected to Oxia Planum, which is where Rosalind Franklin will ...