NASA's Lunar Crater Observation and Sensing Satellite (LCROSS) impact view is seen in this image released on October 9, 2009. Two U.S. spacecraft were crashed into a lunar crater Friday but scientists said it was too early to say whether the mission to search for supplies of water on the Moon had been a success.[Xinhua/Reuters]

NASA's Lunar Crater Observation and Sensing Satellite (LCROSS) impact view is seen in this image released on October 9, 2009. Two U.S. spacecraft were crashed into a lunar crater Friday but scientists said it was too early to say whether the mission to search for supplies of water on the Moon had been a success.[Xinhua/Reuters]

NASA Ames Research Center Director Pete Worden speaks at a news conference after the twin impacts of LCROSS, and its rocket's upper stage in Moffett Field, California October 9, 2009. Searching for stocks of water on the moon, NASA crashed two spacecraft into an eternally dark lunar crater, hoping to splash ice into the light where instruments could assess it.[Xinhua/Reuters]