Th red planet's hot again, cold again history: Explaining persistent hydrogen in Mars' atmosphere
The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for ...
Smithsonian Magazine22h
Curiosity Rover Spots Ancient Water Ripples on Mars, Hinting at a Past With Shallow, Ice-Free Lakes
The 3.7-billion-year-old formations in the planet's Gale Crater suggest the presence of long-gone bodies of liquid water, ...
EurekAlert!1d
Explaining persistent hydrogen in Mars’ atmosphere
The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for decades. Now, Harvard researchers think they have a good explanation for a ...