| Acronym | Meaning |
| GRS | Gamma Ray Spectrometer |
| OMDP | Orbiter Maintenance Down Period |
| SRM | Solid Rocket Motor |
| MDSSC | McDonnell Douglas Space Systems Corp |
| CRIM | Commercial Refrigerator Incubator Module |
| EROS | Earth Resources Observations System |
| USMP | United States Microgravity Payload |
| AFGWC | Air Force Global Weather Center |
| HPOTP | High Pressure Oxidizer Turbopump |
| NS | Neutron Star |