| Acronym | Meaning |
| GNC | Guidance |
| MRIR | Medium Resolution Infrared Radiometer |
| RASC | Royal Astronomical Society Of Canada |
| ADFRF | Ames-Dryden Flight Research Facility |
| BH | Black Hole |
| GRU | Glavnoye Razvedivatel'noye Upravileniye |
| VECO | Vernier Engine Cutoff |
| CFRP | Carbon Fibre Reinforced Plastic |
| OTA | Optical Telescope Assembly |
| RG | Red Giant |