| Acronym | Meaning |
 | SLW | Supercooled Liquid Water |
| AU | Astronomical Unit |
| ACO | Atomic Coordinating Office |
| APA | Administrative Procedures Act |
| EXOSAT | European X-ray Observatory Satellite |
| NSWP | National Space Weather Program |
| SAO | Surface Airways Observation |
| ATMS | Advanced Traffic Management System |
| MAG | Magnetosphere Currents/Fields |
| SAM I | Sensing With Active Microwaves |
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