Icy clouds could have kept early Mars warm enough for rivers and lakes, study finds
Chicago IL (SPX) Apr 27, 2021
One of the great mysteries of modern space science is neatly summed up by the view from NASA's Perseverance, which just landed on Mars: Today it's a desert planet, and yet the rover is sitting right next to an ancient river delta. The apparent contradiction has puzzled scientists for decades, especially because at the same time that Mars had flowing rivers, it was getting less than a third
