| Acronym | Meaning |
 | MMSS | Multimission Support Service |
| PRAIRE | Polarization Radar Illinois Rainfall Experiments |
| PSOS | Profiler Surface Observing System |
| IGY | International Geophysical Year |
| GAPS | Billions (109) Of Actions Per Second |
| ARISTOTELES | Applications And Research Involving Space Technologies Observing The Earth's Field From Low Earth Orbiting Satellite |
| QSO | Quasi-stellar Object |
| TING | Thermosphere-Ionosphere Nested Grid Model |
| ANTHEM | Plasma Simulation Code |
| SIRS | Satellite Infrared Spectrometer |
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