The LCROSS mission

NASA has selected a final destination for its Lunar Crater Observation and Sensing Satellite (LCROSS) which will impact the crater Cabeus A on 9 October.

LCROSS will search for water ice by sending its spent upper stage Centaur rocket to impact the permanently shadowed polar crater at the lunar south pole, while the satellite will fly through the plume of debris thrown up by the impact to measure its properties. After the first impact, and just four minutes later, the LCROSS satellite will too meet its fate in the crater, while the Moon-orbiting Lunar Reconnaissance Orbiter and Earth-based telescopes look on in the search for watery signatures. Shrouded in darkness for billions of years, this is the first time that such pristine material will be exposed to sunlight.

Close up of Cabeus A near the Moon's south pole. Image: NASA/JPL.

The LCROSS mission will reach fruition on 9 October. Image: NASA.

The LCROSS mission is a search for water on the moon. The LCROSS mission is going to do this by sending a rocket crashing into the moon causing a big impact and creating a crater, throwing tons of debris and potentially water ice and vapor above the lunar surface. This impact will release materials from the lunar surface that will be analyzed for the presence of hydrated minerals which would tell researchers if water is there or not. The two main components of the LCROSS mission are the Shepherding Spacecraft (S-S/C) and the Centaur upper stage rocket. The Shepherding Spacecraft guides the rocket to a site selected on the moon that has a high probability of containing water. Because they have only one chance with this mission in finding water, the researchers have to be very precise where they program the Shepherding Spacecraft to guide the rocket.

resources: www.astronomynow.com/news/n0909/14LCROSS/
http://lcross.arc.nasa.gov/mission.htm