| Acronym | Meaning |
| HTHL | Horizontal Takeoff Horizontal Landing |
| GEM | Giotto Extended Mission |
| EUTELSAT | European Telecommunications Satellite Organization |
| VLT | Very Large Telescope |
| MNRAS | Monthly Notices Of The Royal Astronomical Society |
| SAMS | Space Acceleration Measurement System |
| MSOCC | Multisatellite Operations Control Center |
| AC | Atlas Centaur |
| ACRV | Assured Crew Return Vehicle |
| SHARE | Space Station Heat Pipe Advanced Radiator Element |