| Acronym | Meaning |
| REM | Rat Enclosure Module |
| DSP | Defense Support Program |
| GRU | Glavnoye Razvedivatel'noye Upravileniye |
| MAS | Millimeter-wave Atmospheric Sounder |
| ASCO | Arab Satellite Communications Organization |
| MECO | Main Engine CutOff |
| ATM | Apollo Telescope Mount (on Skylab) |
| COSTAR | Corrective Optics Space Telescope Axial Replacement |
| DLR | Deutsche Forschungsanstalt Fuer Luft- Und Raumfahrt |
| MSFC | Marshall Space Flight Center |