On Friday that is today 9th September, 2009 a NASA spacecraft known as Centaur will crash on the South pole of Moon with a force that will throw 350 tonnes of lunar debris and create a 13-foot-deep-crater.
Soon four minutes after the crash another spacecraft Shepherding will fly through the debris and crashland on Moon's surface.
These Four minutes will decide about the preparation of 3 years , space travel of four months . A whopping $79 million has been invested on the preparation.
If LCROSS proves water resides on the Moon, it could be a boon for engineers in the early stages of planning for a human return to the lunar surface.
The impact will be observed by observatories all over the world.
