Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.

Even though the Red Planet's atmosphere is thin, wind is still one of Mars' most relentless sculptors.

ESA's first mission to another world, the Mars Express orbiter, began circling the Red Planet on June 2, 2003. Ever since, ...

The latest panorama from NASA’s Curiosity Mars rover turns Mount Sharp from a distant backdrop into an overwhelming, all-encompassing landscape, the kind of view that makes Gale Crater feel like a ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The Mars Express orbiter captures a sweeping view of Idaeus Fossae in Mars' northern lowlands, ...