Now I wonder what made this happen. What do you think, especially considering it is named The GRAIL?

MOON DAILY

Washington (AFP) Dec 17, 2012 – Two NASA probes crashed into the moon on Monday after spending months gathering data by orbiting miles above the lunar surface, the US space agency said. The site where the tiny probes, dubbed Ebb and Flow, crashed will be named after astronaut Sally Ride, the first American woman in space. Ride, who died earlier this year, had led the GRAIL mission’s MoonKam project for students from ar …more