On this day in space! Sept. 10, 2011: NASA launches GRAIL probes to the moon to map lumpy lunar gravity
On Sept. 10, 2011, NASA’s GRAIL spacecraft launched on a mission to the moon! GRAIL, which stands for Gravity Recovery and Interior Laboratory, was sent to the moon to map its gravitational fields . Scientists could study the moon’s interior structure by looking at maps of the moon’s gravity. Asteroid impacts from billions of yearsContinue Reading












