| Acronym | Meaning |
 | OTHB | Over The Horizon Backscatter |
| SID | Sudden Ionospheric Disturbance |
| ISAMS | Improved Stratospheric And Mesospheric Sounder |
| ATO | Abort To Orbit |
| VTVL | Vertical Takeoff Vertical Landing |
| HDM | Hot Dark Matter |
| JERS | Japanese Earth Resources Satellite |
| MOLA | Mars Observer Laser Altimeter |
| NASM | National Air And Space Museum |
| VPF | Vertical Processing Facility |
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