Water on Mars

6 Jun 2010

At www.msnbc.msn.com/id/37497904/01/technology_and_science-space/print we learn that a rare Mars rock holds the clue to water on the red planet. The rock outcrop is rich in carbonite minerals - which contain carbon dioxide and form readily in the presence of water. So, if conditions allowed carbonite rock to form, that would mean there was water on Mars at some stage.