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

Whether Mars ever had liquid water has long been a subject of debate among scientists, and a study published recently offers compelling evidence. Researchers evaluating data collected by NASA’s ...

"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 ...

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

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

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

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

The signs of wave ripples in the sandy shores of ancient lake beds, created as wind pushed water back and forth have been ...

Mars haunts us as a vision of a planet gone wrong. It was once warm and wet, with rivers flowing across its surface and ...

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

A NASA satellite has spotted frozen "kidney beans" on Mars' sand dunes trapped in place until springtime. Photographing them ...