| Acronym | Meaning |
 | CM | Center Of Mass |
| PCG | Protein Crystal Growth Experiment |
| SNU | Solar Neutrino Units |
| RNGC | Revised New General Catalog |
| SEI | Space Exploration Initiative |
| LY | Light Year (usu. Ly) |
| VTVL | Vertical Takeoff Vertical Landing |
| VAB | Vehicle Assembly Building |
| NORAD | NORth American Aerospace Defense |
| SNG | Sodruzhestva Nezabisimikh Gosudarst |
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