SpaceMartian cave entrances may offer a life-friendly radiation shield The surface of Mars is bombarded with far more dangerous radiation than Earth, but the area just inside caves may shield from UV rays while providing just enough light for life ¿ìè¶ÌÊÓÆµ
SpaceClays found in Martian crater hint that the planet was once habitable Parts of Mars may have been habitable for thousands of years, based on analysis of clays found in one of its craters that could only have formed in a stable, life-friendly environment ¿ìè¶ÌÊÓÆµ