NASA launching twin moon probes to measure gravity

posted by
September 5, 2011
Seattle Times    
Posted in News

"Four decades after landing men on the moon, NASA is returning to Earth's orbiting companion, this time with a set of robotic twins that will measure lunar gravity while chasing one another in circles. By creating the most precise lunar gravity map ever, scientists hope to figure out what's beneath the lunar surface, all the way to the core." (09/05/11)  


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