Early Mars Was Frozen, But Habitable: II Astrobiology Magazine

Mars was cold – very cold, says Chris McKay, a planetary scientist at the NASA Ames Research Center. But that doesn’t mean it was incapable of supporting life. McKay has extensively studied life in some of the harshest environments in the world: the Antarctic dry valleys, the Arctic, and the Atacama desert. In part two of this series, he discusses the frozen dust and why one might want to look closer at the red planet.