Having the high-resolution gravity map helps scientists learn more about lunar composition and, by extension, the makeup and history of other rocky planets and planetary bodies in the solar system, the researchers said. To cite just one example, Zuber noted that the team had learned that the lunar crust is far thinner than scientists had believed, which means the lunar mantle (the layer below the crust) has possibly been exposed by crater impacts. Studying exposed lunar mantle should help planetary scientists understand the Earth's mantle, she said.
Further information about GRAIL findings is available at the mission website
, which is maintained by NASA.