| Acronym | Meaning |
 | APU | Auxiliary Power Unit |
| CM | Central Meridian |
| UPPP | Union Pour La Promotion De La Propulsion Photonique |
| MMCC | Mission Management And Control Centre |
| LY | Light Year (usu. Ly) |
| ASP | Astronomical Society Of The Pacific |
| ASA | Astronomical Society Of The Atlantic |
| A&A | Astronomy And Astrophysics |
| OTV | Orbital Transfer Vehicle |
| CITA | Canadian Institute For Theoretical Astrophysics |
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