The 3.7-billion-year-old formations in the planet's Gale Crater suggest the presence of long-gone bodies of liquid water, ...

"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was ...

"Rootless cones form when lava flows over wet or icy ground, causing it to boil and explode," said Dundas. "The region around ...

The car-sized Curiosity rover has spotted evidence of once quite hospitable environs on Mars.

On Jan. 25, the love planet will join forces with go-getter Mars in an emotionally driven trine, inspiring a flood of ...

A collection of Martian rocks could reveal details about potential past life on the Red Planet – but first NASA has to get ...

Buttes and mesas in Mars' Chryse Planitia contain clay minerals made from liquid water interacting with the rock nearly 4 ...

New research reveals ancient ripples on Mars, providing compelling evidence of long-lost lakes that once existed 3.7 billion ...

Ancient ripples suggest a warmer, wetter past for the Red Planet that supported open water on its surface.

Harvard scientists explain how Mars had warm spells billions of years ago, allowing rivers and lakes to exist.

One of the Red Planet’s features is known as the Martian dichotomy, which describes the sharp contrast between its southern ...

Formations that look like jumbo-sized kidney beans (or blobs of chocolate syrup, depending on your palette) may be indicators ...