Workers in Hangar M open the truck trailer to offload the United Launch Alliance Delta II first stage.

Workers in Hangar M on Cape Canaveral Air Force Station in Florida open the truck trailer to offload the United Launch Alliance Delta II first stage. The Delta rocket will be used to launch the Gamma-Ray Large Area Space Telescope, or GLAST, in May from Launch Pad 17-B on CCAFS. The GLAST is a powerful space observatory that will explore the Universe's ultimate frontier, where nature harnesses forces and energies far beyond anything possible on Earth; probe some of science's deepest questions, such as what our Universe is made of, and search for new laws of physics; explain how black holes accelerate jets of material to nearly light speed; and help crack the mystery of stupendously powerful explosions known as gamma-ray bursts. Photo credit: NASA/George Shelton