NASA’s Gravity Recovery and Interior Laboratory (GRAIL) lifted off from Cape Canaveral Air Force Station’s Pad SLC-17B at 9:08 a.m. EDT.
More About GRAIL:
GRAIL will fly twin spacecraft in tandem orbits around the moon for several months to measure its gravity field in unprecedented detail. The mission also will answer longstanding questions about Earth’s moon and provide scientists a better understanding of how Earth and other rocky planets in the solar system formed.
Scientists will use the gravity field information from the two satellites to X-ray the moon from crust to core to reveal the moon’s subsurface structures and, indirectly, its thermal history.
GRAIL FAST FACTS
The GRAIL MoonKAM will allow classrooms to request pictures of the lunar surface from cameras on the twin satellite.