The PTR Group Inc today announced that another satellite that it helped develop, the Interstellar Boundary Explorer (IBEX), was successfully launched on October 19th, 2008, from Kwajalein Atoll in the Marshall Islands. The spacecraft, built by prime contractor Orbital Sciences Corporation (NYSE: ORB), was placed into orbit by Orbital’s Pegasus rocket, which was dropped from an L-1011 aircraft over the Pacific Ocean.  

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