Matt_dk sends word that NASA has chosen a new target crater into which to crash the Lunar Crater Observation and Sensing Satellite (LCROSS) mission vehicles. "The decision means that when NASA's LCROSS probe and its spent Centaur rocket stage slam into the moon on Oct. 9, they will crash into the large crater Cabeus, and not the nearby (and smaller) Cabeus A crater that was previously targeted. ... The data suggests the new target Cabeus has a concentration of hydrogen — an indication of possible water ice — that's higher than anywhere else at the lunar south pole. ... A small valley etched into the otherwise tall crater ridge of Cabeus should allow sunlight to shine on the ejecta cloud kicked up when LCROSS and its Centaur rocket stage crash into the moon in successive impacts."