http://www.helium.com./knowledge/171625-nasa-science-water-on-mars-ice-on-mars-search-for-ice-on-mars-phoenix-lander-finds-ice-on-mars.xml Helium.com > Astronomy > Searching for water on Mars: Phoenix Lander mission discovers ice en-us Copyright Helium.com Sat, 21 Jun 2008 13:17:49 GMT Sat, 21 Jun 2008 13:17:49 GMT