| Acronym | Meaning |
 | SPTN | SPARTAN |
| TAL | Transatlantic Abort Landing |
| VPF | Vertical Processing Facility |
| TKSC | Tsukuba Space Center |
| LY | Light Year (usu. Ly) |
| RVSN | Raketniye Voiska Stratigcheskovo Naznacheniya |
| HDE | Henry Draper Extension |
| ENSO | El Nino/Southern Oscillation |
| OSSE | Oriented Scintillation Spectrometer Experiment |
| MOL | Manned Orbiting Laboratory |
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