text: On September 25, 2009, NASA declared that data sent from its Moon Mineralogy Mapper (M3) instrument aboard Chandrayaan-1 orbiter confirmed the existence of water (humid soil) over large areas of the Moon's surface, albeit in low concentrations and in a form (hydroxyl group) that is chemically bound to the rocks, supporting earlier evidence from spectrometers aboard the Deep Impact and Cassini probes.