NASA researchers have identified geological structures on Mars that are unlike anything found on Earth. From spider-like ...

Adams modified a model called KINETICS to simulate how a combination of hydrogen and other gases reacting with both the ground ... the chemistry of Mars' atmosphere was also fluctuating. CO 2 is ...

Adams and colleagues simulated how hydrogen would have mixed and reacted with other gases in Mars's atmosphere and with chemicals on its surface. They found that Mars experienced episodic warm ...

Formations that look like jumbo-sized kidney beans (or blobs of chocolate syrup, depending on your palette) may be indicators of whether Mars was habitable in the distant past.

The above image shows a 20-meter-long chunk of frozen carbon dioxide falling off a cliff. Rising temperatures during the ...

"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...

Hydrogen was previously theorized as the magic ingredient, mixed with carbon dioxide in the Martian atmosphere ... and other gases reacting with both the ground and the air controlled the early ...

The iridescent cloud reveals new clues about ice formation in the Martian atmosphere (no little green men, sorry).

NASA’s Curiosity rover captured stunning images of Martian twilight clouds, revealing iridescent dry ice formations on Mars.

A massive meteor strike on Mars sent shockwaves across the planet, revealing that some of its tremors weren’t tectonic but ...

Scientists may have figured out how Mars hung onto its surface liquid water in its ancient history via alternating periods of hot and cold. But what would the impact have been on habitability?

The fact that the cold, dry Mars of today had flowing rivers and ... mixed with carbon dioxide in the Martian atmosphere to trigger episodes of greenhouse warming. But the lifetime of atmospheric ...