The study analyzed data brought by the NASA Gravity Recovery and Interior Laboratory (GRAIL) mission, which proves the speculation to be true. The GRAIL mission had two spacecraft orbit the moon ...

The finding could explain the long-running mystery of why the surfaces of the lunar near and far sides are so different.

NASA’s Gravity Recovery and Interior Laboratory (GRAIL) mission has uncovered the origin of massive invisible regions that make the Moon’s gravity uneven, a phenomenon that affects the ...

Here’s how it works. In 2011, NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission sent a pair of washing-machine-size satellites into low lunar orbit for nearly a year. Thanks to the ...

The data from the U.S. space agency's GRAIL, or Gravity Recovery and Interior Laboratory, mission indicates that the moon's deep interior has an asymmetrical structure, apparently caused by ...

A Delta 2 Heavy rocket propels NASA's twin Gravity Recovery and Interior Laboratory (GRAIL) mission into the clouds over Cape Canaveral Air Force Station in Florida. The spacecraft launched at 9: ...

Near-identical twins Grail-A and Grail-B -- short for Gravity Recovery and Interior Laboratory -- are due to blast off Thursday aboard an unmanned rocket. Although launched together, the two ...

Data from NASA’s twin Gravity Recovery and Interior Laboratory (GRAIL) probes has been used to create the highest resolution gravity map yet of any body in the Solar System. The two washing ...

In 2012, NASA rang in the New Year with a fresh mission — sending the Gravity Recovery And Interior Laboratory, also known as GRAIL, spacecraft to the moon. As the first endeavor intended to ...

Andrews-Hanna’s talk centered on how the findings of two probes from NASA’s Gravity Recovery and Interior Laboratory (GRAIL) uncovered surprises beneath the surface of the moon in 2011.