| Acronym | Meaning |
| OAO | Orbiting Astronomical Observatory |
| LDEF | Long Duration Exposure Facility |
| PLSS | Portable Life Support System |
| RFI | Radio Frequency Interference |
| UBM | Unpressurized Berthing Mechanism |
| EUVE | Extreme UltraViolet Explorer |
| PM | Pressurized Module |
| CCDS | Centers For The Commercial Development Of Space |
| ETR | Eastern Test Range |
| RTLS | Return To Launch Site |