Local planetary geologist Chris Okubo is on a mission to understand the past roles of groundwater and faulting on Mars by studying similar locations on Earth. Okubo works in the Astrogeology Research ...

Mars was once a wet world. The geological record of the Red Planet shows evidence for water flowing on the surface -- from river deltas to valleys carved by massive flash floods. But a new study shows ...

(CNN) — Data from a retired NASA mission has revealed evidence of an underground reservoir of water deep beneath the surface of Mars, according to new research. A team of scientists estimates that ...