| Acronym | Meaning |
 | EUTELSAT | European Telecommunications Satellite Organization |
| HD | Henry Draper Catalog Entry |
| USAF | United States Air Force |
| DM | Dark Matter |
| USMP | United States Microgravity Payload |
| APL | Applied Physics Laboratory (at Johns Hopkins) |
| GOMOS | Global Ozone Monitoring By Occultation Of Stars |
| SIRTF | Space InfraRed Telescope Facility |
| NAS | Numerical Aerodynamic Simulation |
| BFS | Backup Flight System |
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