universetoday.com
Mars Has Had Many, Many Ice Ages - Universe Today
The polar ice caps on Mars have been there for a long time; although, they haven’t always stayed the same size, or shape. They cover the surface between the poles and approximately 60° latitude today, but Norbert Schorghofer of the Institute for Astronomy and NASA Astrobiology Institute in Hawaii has shown that Mars has had … Continue reading "Mars Has Had Many, Many Ice Ages"