Add Yahoo as a preferred source to see more of our stories on Google. On Sept. 10, 2011, NASA's GRAIL spacecraft launched on a mission to the moon! GRAIL, which stands for Gravity Recovery and ...

WASHINGTON (Reuters) -An exhaustive examination of lunar gravity using data obtained by two NASA robotic spacecraft is offering new clues about why the two sides of the moon - the one perpetually ...

Earth’s gravitational pull on the moon has revealed that our satellite’s interior is warmer on its near side, the one facing our planet, suggesting its insides are uneven. In the GRAIL mission, two ...

Workers using an overhead crane lower the second stage of a Delta II launch vehicle toward the first stage for mating at NASA's Space Launch Complex 17B in Florida, on May 10, 2011. The payload ...

Pakistan, May 15 -- A new scientific breakthrough from NASA has shed light on one of the Moon's long-standing mysteries: why its Earth-facing side looks so distinct from the far side we never see.

On Dec. 17, 2012, NASA's GRAIL mission crashed into the moon. GRAIL stands for Gravity Recovery And Interior Laboratory, and the mission consisted of two twin spacecraft named Ebb and Flow that are ...