NASA to crash rocket into Moon's surface
NASA is due to deliberately crash a rocket into the Moon today as part of an experiment that it hopes will reveal signs of water.
Last month, scientists said they had found "unambiguous evidence" of water across the surface of the Moon.
Today's experiment will kick up a six-mile high dust cloud that will be examined for signs of ice using Earth-based telescopes.
The drama, which will be broadcast live on NASA's website, will begin when a probe that is currently mapping the lunar surface separates from its launch rocket.
The rocket will smash into a crater at the south pole of the Moon at 5,600mph and the probe will then fly through the resulting dust cloud before also plunging to the surface.