Water Ice At The Lunar Poles . ... Credit Copyright: Clementine Project , BMDO , NRL , LLNL Explanation: After seven weeks in lunar orbit, instruments on board NASA's Lunar Prospector spacecraft have produced strong evidence for water ice on the Moon . While not in extensive sheets, this ice could be in the form of crystals, mixed in low concentrations with material in craters around the frigid North and South lunar poles. How much ice? ... NASA Web Site Statements, Warnings, and Disclaimers . ...