Congratulations and apologies are due. The LCROSS team, who endured much grumbling from Internet viewers after last month's crash into the moon failed to produce a big visible plume, is reporting what they say is clear evidence of water in a lunar crater. Not just a thimbleful, either—at least 24 gallons, and probably more, from a crater 20 to 30 meters wide. The spectral signature from two different instruments is "very real," said a smiling principal investigator Anthony Colaprete.
The results from LCROSS lend credence to the idea that the rest of the hydrogen detected a decade ago at the moon's poles is water ice, too, according to Greg Delory, a researcher at the University of California at Berkeley. Read about the LCROSS results here.