| Acronym | Meaning |
 | IUS | Inertial Upper Stage |
| ESRIN | European Space Research Institute |
| MRSR | Mars Rover And Sample Return |
| CZCS | Coastal Zone Color Scanner |
| ISZ | Iskusstvenniy Sputnik Zemli |
| GOMR | Global Ozone Monitoring Radiometer |
| NRAO | National Radio Astronomy Observatory |
| PASS | Primary Avionics Software System |
| PDS | Planetary Data System |
| PI | Principal Investigator |
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