| Acronym | Meaning |
 | (ES) | Sporadic E |
| ANPR | Advance Notice Of Proposed Rulemaking |
| HSMT | Helical Scan Magnetic Tape |
| PCM | Punched Card Machine |
| FWS | Filter Wedge Spectrometer |
| TIE-GCM | Thermosphere/Ionosphere/Electrodynamics General Circulation Model |
| GGI | GPS Geoscience Instrument |
| LAS | LAGEOS Apogee Stage |
| GOTS | GALE Oceanographic Temperature Studies |
| AIRFA | American Indian Religious Freedom Act |
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