In the predawn light, NASA's twin Gravity Recovery and Interior Laboratory (GRAIL) spacecraft arrive at at Space Launch Complex 17B at Cape Canaveral Air Force Station in Florida.
In the predawn light, NASA’s twin Gravity Recovery and Interior Laboratory (GRAIL) spacecraft arrive at at Space Launch Complex 17B at Cape Canaveral Air Force Station in Florida.
Image credit: NASA/Kim Shiflett
Aug. 18, 2011