Did cirrus clouds help keep early Mars warm and wet?
Tuesday, August 16, 2016 - 10:01
in Astronomy & Space
Many features on the surface of Mars hint at the presence of liquid water in the past. These range from the Valles Marineris, a 4,000 km long and 7 km deep system of canyons, to the tiny hematite spherules called "blueberries". These features suggest that liquid water played a vital role in shaping Mars.