Groundbreaking study finds Mars may once have had rain and snow - Research provides new insights into evolution of Red Planet ...

Valleys on Mars suggest the Red Planet was once covered in flowing water — but it's still a mystery how that could have been.

Visit ancient Mars—a surprisingly temperate planet where snow or rain falls from the sky, and rivers rush down valleys to ...

New research suggests ancient Mars may have been warm and wet, with rainfall or snowmelt carving its iconic valleys.

Mars, the Red Planet, looks nothing like Earth today. However, its geological features indicate it once had a warm and wet ...

Was Mars a dry and cold planet billions of years ago like we see today, or was it warmer, wetter, and possibly having the ...

A new study from geologists at the University of Colorado Boulder paints this picture of a Red Planet that was relatively ...

A new analysis by UC Boulder geologists suggests the ancient Mars landscape was formed by falling precipitation, including ...

Researchers believe that Mars might be home to ice deposits outside of its poles that surpass the volume contained in the ...

Visit ancient Mars -- a surprisingly temperate planet where snow or rain falls ... only about 75% as bright as it is today. Sprawling ice caps may have covered the highlands around the Martian ...