| Acronym | Meaning |
 | SL | (Comet) Shoemaker-Levy / SpaceLab |
| LM | Lunar Module |
| IAU | International Astronomical Union |
| VAFB | Vandenberg Air Force Base |
| POEM | Polar Orbiting Earth Mission |
| ADEOS | Advanced Earth Observing Satellite |
| DOMSAT | Domestic Satellite |
| TDRS | Tracking And Data Relay Satellite |
| BBXRT | Broad-Band X-Ray Telescope |
| SSO | Spurious Shut-off |
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