DULLES, Va., Jul 29, 2002 /PRNewswire via COMTEX/ --

- Company's Engineering Staff to Support Space Flight and Airborne Programs At NASA's Ames Research Center -

Orbital Sciences Corporation (NYSE: ORB) announced today that its Technical Services Division (TSD), based in Greenbelt, MD, has been selected for an eight-year, $57 million cost- plus/award fee contract by Lockheed Martin Corporation. Under the contract, engineers and other personnel from Orbital's TSD will support Lockheed Martin as part of the NASA Ames Research Center's Programs and Projects (P&P;) services contract.

Under the terms of Orbital's contract from Lockheed Martin, the company will perform numerous activities involved in NASA Ames space research and flight programs, including its Space Station Biological Research Project, Flight Payload Integration and Fundamental Biology Programs, as well as its Space Station payload projects and Discovery missions. Orbital will also assist in maintaining project and mission schedules and in coordinating science planning between NASA Ames and NASA Headquarters and other NASA centers, science working groups and external groups. The company's technical staff will support Lockheed Martin in planning and analyzing options for potential space flight opportunities during development of flight experiments and hardware.

"Orbital TSD is very pleased to be able to continue to participate in the NASA programs currently in development, including the Space Station Biological Research Project, the airborne Stratospheric Observatory for Infrared Astronomy program, and the Kepler Discovery Mission," said Mr. Richard Hicks, Vice President of Orbital's TSD.

Dr. Bruce Rentch, Orbital's Senior Director of Programs and the company's P&P; Program Manager, added, "We are extremely excited about our contract selection by Lockheed Martin. Over the next eight years, the Orbital TSD team looks forward to continuing and enhancing the level of support for space flight and airborne missions that we have given to NASA Ames for the past seven years and to Lockheed Martin for the past two years."

Orbital is one of the world's leading developers and manufacturers of affordable space systems for commercial, civil government and military customers. The company's primary products include low-orbit, geostationary and planetary spacecraft for communications, scientific and remote sensing missions; ground- and air-launched rockets that deliver satellites into orbit; and missile defense boosters that are used as target and interceptor vehicles. Orbital also offers space-related technical services to government agencies and develops and builds satellite-based transportation management systems for public transit and public works agencies, as well as private vehicle fleet operators.

     More information about Orbital can be found at http://www.orbital.com.
CONTACT: Barron Beneski, Public and Investor Relations of Orbital Sciences Corporation, +1-703-406-5528 or Beneski.barron@orbital.com

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SOURCE Orbital Sciences Corporation

CONTACT:          Barron Beneski, Public and Investor Relations of Orbital
                  Sciences Corporation, +1-703-406-5528 or Beneski.barron@orbital.com

URL:              http://www.orbital.com
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