NASA's next mission to the moon won't involve astronauts or merely orbit its surface. Prior to a human return to the moon, a mission is underway to build a satellite that will impact one of the moon's polar regions to search for water ice beneath its permanently-shadowed craters.
Working with NASA Ames Research Center on this unusually fast-paced project, Northrop Grumman is building and integrating the Lunar CRater Observation and Sensing Satellite (LCROSS). Production of several subsystems began soon after contract award in 2006.
LCROSS, a secondary payload that will accompany the Lunar Reconnaissance Orbiter to the moon, consists of two components – the upper stage 4,400-pound (2,000-kilogram) rocket booster and a smaller, one-ton (1,000-kilogram) shepherding spacecraft. On approach to the moon, the shepherding spacecraft will position the upper stage for a precise impact, then separate and perform a braking maneuver to observe at close range the upper stage's impact into the moon.
The blow, anticipated to gouge a crater approximately 16 feet (five meters) deep and one-third the size of a football field, will send a 1,100-ton (1,000-metric-ton) plume as high as 22 to 25 miles (35 to 40 kilometers). Cameras and sensors will monitor LCROSS' debris plume. The shepherding spacecraft will then fly through it, observing and characterizing the plume to assess the possible existence of hydrated minerals, ice crystals, and hydrocarbons.