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

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

Caltech scientists published a study using NASA Curiosity rover imagery showing the past existence of warm water on Mars.

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

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

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

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

Discoveries of clay minerals in Martian mounds by researchers indicate that Mars once had large bodies of water billions of ...

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

Living on Mars will be no easy feat. Building viable living quarters would require an inflatable habitat that can be covered ...

UK researchers have confirmed the existence of a “super Earth” located 20 light-years away that could reveal the existence of ...

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