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

Mars Express has found a unique butterfly-shaped crater on Mars. This formation resulted from a space rock hitting at a low ...

Yellowstone National Park is an excellent laboratory for exciting planetary science research, write columnists R. Greg ...

Giant, dense structures have been discovered beneath the surface of Mars and they are leaving experts both mystified and excited. The first of these, confirmed by researchers in a fascinating paper, ...

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 ...

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