| Acronym | Meaning |
 | SL | (Comet) Shoemaker-Levy / SpaceLab |
| SEP | Societe Europeenne De Propulsion |
| HTHL | Horizontal Takeoff Horizontal Landing |
| SLAR | Side-Looking Airborne Radar |
| FOC | Faint Object Camera |
| TAU | Thousand Astronomical Unit |
| IAPPP | International Amateur/Professional Photoelectric Photometry |
| CZCS | Coastal Zone Color Scanner |
| HB | Horizontal Branch |
| SHARE | Space Station Heat Pipe Advanced Radiator Element |
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