| Acronym | Meaning |
| BFS | Backup Flight System |
| RAS | Royal Astronomical Society |
| LPO | La Palma Observatory |
| CFF | Columbus Free Flyer |
| CSM | Command And Service Module |
| ASTRO | Space Astrophysics Laboratory |
| JD | Julian Date; Julian Day (Number) |
| SME | Solar Mesosphere Explorer |
| PEM | Payload Electronics Module |
| MOPITT | Measurements Of Pollution In The Troposphere |