| Acronym | Meaning |
 | RFI | Radio Frequency Interference |
| CRRES | Combined Release/Radiation Effects Satellite |
| ASI | Agenzia Spaziale Italiano |
| SL | (Comet) Shoemaker-Levy / SpaceLab |
| APL | Applied Physics Laboratory (at Johns Hopkins) |
| WSGT | White Sands Ground Terminal |
| GHRS | Goddard High Resolution Spectrograph |
| MFV | Main Fuel Valve |
| GLOMR | Global Low-Orbiting Message Relay |
| ZHR | Zenith Hourly Rate |
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