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KENNEDY SPACE CENTER, FLA. - On NASA's Space Launch Complex 2 (SLC-2), Vandenberg Air Force Base, Calif., the interstage of the Delta II rocket is ready to be lifted up the tower for mating with the first stage (seen behind it). The rocket will carry the ICESat and CHIPSat satellites into Earth orbits. ICESat is a 661-pound satellite known as Geoscience Laser Altimeter System (GLAS) that will revolutionize our understanding of ice and its role in global climate change and how we protect and understand our home planet. It will help scientists determine if the global sea level is rising or fal…