Lunar Prospector Hydrogen Concentration - South Pole
Released on September 30, 2008
In 1998 NASA's Lunar Prospector mission used the presence of hydrogen as a sign of potential ice deposits. As you can see in this video, Prospector data showed significantly more hydrogen at the south pole of the moon (areas colored blue). Lunar Reconnaissance Orbiter will build on this data and narrow down the regions that may contain water ice deposits.