A rock containing many smaller round stones could indicate that there was once a large amount of liquid water on the Red ...

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

As it whooshed over the Gale Crater on February 28, the orbiter snapped a picture of the rover, which appears as a tiny black ...

"You could pull up Google Earth images of places like Utah, zoom out, and you’d see the similarities to Mars." ...

NASA’s Mars Reconnaissance Orbiter (MRO) has captured what’s believed to be the first orbital image of the Curiosity rover ...

Cornell researchers are offering an explanation after mistakenly identifying what appeared to be water on Mars’ south pole.

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

Imagery of fractured terrain on Venus, Mars, and Jupiter’s moon Europa pinpoints environments influenced by water.

“The discovery of abundant siderite in Gale Crater represents both a surprising and important breakthrough in our understanding of the geologic and atmospheric evolution of Mars,” Benjamin Tutolo, ...

For the past four years, NASA 's Perseverance rover has rambled over a region of Mars where scientists say a strong river ...

It's hard to explain that with just ice." Satellite images of Mars today still reveal the fingerprints of water on the planet. Around the equator, for example, vast networks of channels spread ...