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

"Before Hubble, no generation ever had access to unimaginably vibrant views of space, stretching almost all the way back to ...

The HiRise camera is living up to its name, capturing a rare look at the veteran rover from way up in Martian orbit.

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

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

Perhaps the best known of all comets is Halley, correctly pronounced so that it rhymes with rally, not daily. It is named after the 17th-18th century astronomer Edmond Halley. This ...

NASA’s Curiosity rover has uncovered a missing piece in the puzzle of Mars' past atmosphere. Scientists discovered ...

Mars may once have had a relatively warm and wet climate conducive to flowing water, rain and snow, producing a terrain much ...

Great Basin National Park nearby offers ancient bristlecone pines (some older than the pyramids), mysterious limestone caves, and Nevada’s only glacier, proving that this state contains multitudes ...

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

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

NASA's Mars Reconnaissance Orbiter captured a 328-foot-wide pit on Mars, potentially leading to subterranean caves. This ...