"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was ...

The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for ...

The car-sized Curiosity rover has spotted evidence of once quite hospitable environs on Mars.

New research suggests that ancient Mars might have experienced alternating hot and cold periods, enabling it to retain liquid ...

Mars haunts us as a vision of a planet gone wrong. It was once warm and wet, with rivers flowing across its surface and ...

Learn about the analysis conducted on wave ripples in the Gale crater region of Mars, where ice-free ponds and lakes stood ...

The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for decades. Now, researchers think they have a good explanation for a warmer, ...

is providing new details about how the ancient Martian climate went from potentially suitable for life -- with evidence for widespread ... Mars' Missing Atmosphere Could Be Hiding in Plain Sight ...

allowing them to model how the hydrogen content of the Martian atmosphere changed over time. An image of the dry and arid surface of Mars capture by the Perseverance rover as it hunts ancient ...

Now, Harvard researchers think they have a good explanation for a warmer, wetter ancient Mars ... details of the early Martian atmosphere’s relationship to hydrogen, and how that relationship changed ...

Now, Harvard researchers think they have a good explanation for a warmer, wetter ancient ... atmosphere’s relationship to hydrogen, and how that relationship changed over time. “Early Mars ...