I captured this image from a remote camera at Cape Canaveral's SLC PAD 17B. The camera was set with a sound-activated trigger to begin shooting at engine ignition. The Gravity Recovery and Interior Laboratory, or GRAIL, mission is a part of NASA's Discovery Program. GRAIL will fly twin spacecraft in tandem orbits around the moon for several months to measure its gravity field in unprecedented detail. Launched atop a Delta II rocket; the last one to launch from Florida.