Not that Michelle Kwan should join NASA, but it would appear that the surface of Mars has a lot more frozen water than previously thought. Initial data from NASA’s Mars Odyssey spacecraft, which began its mapping mission last week, include tentative identification of significant, but as yet unquantified, amounts of frozen water. Whether that means frozen puddles and ponds or ice crystals mixed into the top layer of soil remains to be seen. “We’re actually detecting a deficit of neutrons emerging from the surface, and just about the only thing that can cause that is hydrogen atoms,” Jeffrey Plaut, the Jet Propulsion Laboratory’s deputy project scientist for the Odyssey mission, told NewsFactor.