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

Scientists confirm the existence of liquid water on Mars, altering our understanding of the Red Planet. Evidence of wave ...

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

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

The northern plains of Mars, marked by thousands of mounds and hills, hold significant evidence of the planet's watery past.

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

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

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

Thousands of mounds and hills in Mars' barren northern plains are full of clay minerals, providing evidence that the rocks ...

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic mission may investigate the area one day.

NASA's Mars Reconnaissance Orbiter has captured images of kidney bean-shaped frozen sand dunes in Mars' northern hemisphere, ...