"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 ...

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

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

New research suggests that ancient Mars might have experienced alternating hot and cold periods, enabling it to retain liquid ...

The findings are the result of the ongoing studies performed by NASA’s Curiosity rover, which has been scouring the red ...

The 3.7-billion-year-old formations in the planet's Gale Crater suggest the presence of long-gone bodies of liquid water, with no ice covering the surface ...

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

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

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

NASA's Curiosity Rover has been exploring Mars since 2012 and more recently has found evidence of ice-free ancient ponds and ...

The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for ...

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