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DULLES, Va., May 24 /PRNewswire/ -- MacDonald, Dettwiler and Associates Ltd. (MDA), the Vancouver, British Columbia-based subsidiary of Orbital Sciences Corporation (NYSE: ORB) announced that it has filed a preliminary prospectus in connection with an ...

DULLES, Va., May 22 /PRNewswire/ -- Orbital Sciences Corporation (NYSE: ORB) announced today that its Shuttle Remote Manipulator System (SRMS), also known as the "Canadarm," is playing a key role on NASA's current Space Shuttle Atlantis supply mission ...