Learn more about volcanic activity on Mars and how it may have once provided vital elements to the atmosphere.

Olympus Mons, a shield volcano on Mars, is the largest volcano in the solar system, measuring approximately 370 miles in diameter and 26 kilometers in height. The formation of Olympus Mons and three ...

The images, captured by the Mars Express orbiter, reveal the volcano's southeast flank with hundreds of overlapping lava flows.

A chance discovery by a NASA rover on Mars shows that the red planet has a form of lightning, which researchers had suspected ...

"Explosive volcanism could repeatedly seed low latitudes with ice and ash, producing buried or insulated ice deposits that help explain the excess hydrogen signals measured near the equator." Ancient ...

Skylights, openings in the surface of Mars that descend down into caves, have been found on Mars, along with signatures for ...