| Acronym | Meaning |
 | LRB | Liquid Rocket Booster |
| GPPF | Gravitational Plant Physiology Facility |
| UKST | United Kingdom Schmidt Telescope |
| PCT | Photometric Calibration Test |
| SSO | Spurious Shut-off |
| JCMT | James Clerk Maxwell Telescope |
| HST | Hubble Space Telescope |
| GMT | Greenwich Mean Time |
| SEM | Space Environment Monitor |
| PLSS | Portable Life Support System |
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