This image, taken by the Mars orbiter camera on NASA’s Mars Global Surveyor spacecraft, shows gullies on martian crater walls that may be carved by liquid water melting from remnant snow packs.

Visit ancient Mars—a surprisingly temperate planet where snow or rain falls from the sky, and rivers rush down valleys to feed hundreds of lakes. A new study from geologists at the University of ...

As the UA-led Phoenix Mars Lander mission enters its final stages, it is clear that this mission has paved the way for further exploration of the Red Planet. Carla Bitter, education and public ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Though Mars, the Red Planet ...

Was Mars a friendly planet for water, even life, in its ancient past? Huge channel networks run across its surface. Rocks show signs of water immersion. Yet pictures sent back from NASA's Curiosity ...

Water is the essence of life. When scientists discovered permafrost ice caps on Mars’ north pole in 1976, the news immediately sparked speculation about potential life on the red planet. The later ...

Visit Mars as it might have looked billions of years ago. Not frozen and dry, but wet, warm, and alive with flowing water. Across vast highlands near the Martian equator, deep river-like valleys snake ...

A geologist says he may have figured out what caused mysterious gullies on Mars: water trickling from the melting of snow that had built up over thousands of years. His theory may help scientists ...

Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a ...

Mars may once have had a relatively warm and wet climate conducive to flowing water, rain and snow, producing a terrain much different than the frigid wasteland we know today. A new study published on ...