Photo Gallery: Day before launch
BY STEPHEN CLARK
Posted: September 7, 2011
On the eve of its scheduled launch, a Delta 2 rocket stands 125 feet tall atop Space Launch Complex 17B at Cape Canaveral. Liftoff is scheduled for Thursday at 8:37 a.m. Eastern time (1237 GMT) or 9:16 a.m. Eastern time (1316 GMT).
The Delta 2 rocket has two one-second launch opportunities each day.
Its payload is NASA's Gravity Recovery and Interior Laboratory, or GRAIL, mission. GRAIL's two identical satellites will embark on a circuitous three-month journey to the moon, where the tandem will measure the lunar gravity field and gather insights about the moon's interior.
The flight is the final planned launch of a Delta 2 rocket from Cape Canaveral.
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