NASA took the Mars Odyssey spacecraft for a test run Monday for five orbits’ worth of science measurements. So far, results indicate hydrogen in the surface of the Martian southern hemisphere. Click for a larger graphic showing how a virtual shovel digs for elements on Mars. “It’s beautiful,” said William Feldman, a scientist with Los Alamos National Laboratory who operates the neutron spectrometer instrument on Odyssey. “Everything is very preliminary because we don’t have enough to make a map yet.” A full map of Mars’ surface elements will take about a week.