... Humphrey Rock Indicates Ancient Martian Water . ... How prevalent was water on Mars? Results from the Spirit rover now indicate that Gusev crater likely had a wet past, a result that comes shortly after Spirit's twin rover Opportunity uncovered clear evidence of past water at Meridiani Planum on the other side of Mars. The Hubble Ultra Deep Field . ... The HUDF is expected to be the deepest image of the universe ever taken in visible light. ... Was Mars ever wet enough to support life? ...