2011 Top 100
94: Orbital Sciences Corp.
| Top 100 Revenue: | $183,322,000 |
| Defense Revenue: | $101,361,000 |
| Civilian Revenue: | $81,961,000 |
| 2010 Revenue: | N/A |
| 2010 Earnings: | N/A |
| 2009 Revenue: | $1.1 billion |
| 2009 Earnings: | $36.6 million |
| Number of employees: | N/A |
| Headquarters: | Dulles, Va. |
| Website: | http://www.orbital.com |
| Leadership: | David W. Thompson, chairman and CEO |
| Ticker: | ORB |
| Lines of business: | Space launch vehicles, missile defense systems, satellites and related systems, advanced space systems and space technical services |
| Major customers: | NASA, Air Force, Navy, Defense Advanced Research Projects Agency and Energy Department |
| Major contracts/projects: | N/A |