| Acronym | Meaning |
 | DFRC | Dryden Flight Research Center |
| SOFIA | Stratospheric Observatory For Infrared Astronomy |
| MIMR | Multifrequency Imaging Microwave Radiometer |
| LTP | Lunar Transient Phenomenon |
| RFI | Radio Frequency Interference |
| PVO | Pioneer Venus Orbiter / Protivo-Vosdushniya Oborona |
| GGM | Goskogidromet/Gidromettsentr |
| CR | Correlation Radiometer |
| TSUP | Tsentr Upravileniya Polyoti |
| HTVL | Horizontal Takeoff Vertical Landing |
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