| Acronym | Meaning |
| UTC | Coordinated Universal Time |
| CR | Correlation Radiometer |
| DOE | Department Of The Environment |
| ESO | European Southern Observatory |
| ORFEUS | Orbiting And Retrievable Far And Extreme Ultraviolet Spectrometer |
| ATO | Abort To Orbit |
| JPL | Jet Propulsion Laboratory |
| MRO | Memory Read-Out |
| SR | Special Relativity |
| SMS | Shuttle Mission Simulator |