Mars at sunset reveals dozens of razor-thin atmospheric layers in stunning detail, helping scientists map dust and ice patterns.

Seismic readings of the interior of Mars strongly suggest large quantities of water buried 6 to 12 miles underground. When you purchase through links on our site, we may earn an affiliate commission.

Water once existed in abundance of at the surface of Mars. How much of that water has been stored in the planet's crust is still unclear, according to a new analysis. Water once existed in abundance ...