The Moon as seen from the Galileo probe on its way to Jupiter (Photo: NASA)
Artist's impression of the GRAIL spacecraft mapping the Moon's gravity (Image: NASA/JPL-Caltech)
Map of the Moon's crust with colors showing thickness (Image: NASA/JPL-Caltech/S. Miljkovic)
Artist's impression of the GRAIL spacecraft, which has helped provide a better understanding of the Moon's distinctive "seas" (Image: NASA/JPL-Caltech/MIT)
Sometimes great mysteries hang right over our heads. We’re so used to looking up and seeing the “Man in the Moon” that we often don’t realize that those familiar dark areas on the face of our nearest neighbor are part of a centuries old question that has yet to be answered. Many hypotheses have been put forward and now data from NASA's twin Gravity Recovery and Interior Laboratory (GRAIL) lunar orbiters has provided new insights into how the surface of the Moon formed and how its distinctive “seas” came to be.
Other Images from this Gallery