DULLES, Va.Jun. 23, 2009-- Orbital Sciences Corporation (NYSE:ORB), in conjunction with the Mid-Atlantic Regional Spaceport, will hold a Ground Breaking Ceremony on June 29, 2009 at NASA’s Wallops Flight Facility. The event will commemorate the official beginning of construction on launch facilities for the company’s Taurus II space launch vehicle and its related work for NASA’s Commercial Orbital Transportation Services (COTS) program.


NASA Wallops Flight Facility Visitor’s Center


Official remarks begin at 10:15.a.m.


Senator Barbara Mikulski – State of Maryland

David W. Smith - Assistant Secretary of Commerce and Transportation, State of Virginia

Chairman and CEO David W. Thompson – Orbital Sciences Corporation
Robert D. Strain – Center Director, Goddard Space Flight Center, NASA

Chairman Vincent Boles – Mid-Atlantic Regional Spaceport


10:15 a.m. – Official Remarks
10:45 a.m. – Transportation to ground breaking site
11:15 a.m. – Ground breaking ceremony/photo opportunities

11:30 a.m. to noon – Media availability/photo opportunities

11:45 a.m. – Transportation back to NASA Wallops Flight Facility

Submission of Credentials:

Due to the facility security requirements, any members of the media wishing to attend the event must submit their credentials to NASA Wallops Flight Facility Public Affairs Office no later than close of business on Thursday, June 25, 2009. All attendees must be U.S. citizens and bring a photo ID with them the day of the event.

About Orbital

Orbital develops and manufactures small- and medium-class rockets and space systems for commercial, military and civil government customers. The company’s primary products are satellites and launch vehicles, including low-Earth orbit, geosynchronous-Earth orbit and planetary spacecraft for communications, remote sensing, scientific and defense missions; human-rated space systems for Earth-orbit, lunar and other missions; ground- and air-launched rockets that deliver satellites into orbit; and missile defense systems that are used as interceptor and target vehicles. Orbital also provides satellite subsystems and space-related technical services to government agencies and laboratories.

More information about Orbital can be found at http://www.orbital.com

Source: Orbital Sciences Corporation

Orbital Sciences Corporation
Barron Beneski, 703-406-5528
Public and Investor Relations
NASA Wallops Flight Facility Public Affairs Contacts:
Keith Koehler, 757-824-1579