| Acronym | Meaning |
| ISEP | Isolated/Stabilized Exercise Platform |
| ESTEC | European Space Research And Technology Centre |
| UFO | Unidentified Flying Object |
| JD | Julian Date; Julian Day (Number) |
| GOMOS | Global Ozone Monitoring By Occultation Of Stars |
| HH | Hitchhiker |
| LPO | La Palma Observatory |
| CSA | Canadian Space Agency |
| IOTA | Infrared-Optical Telescope Array |
| DMSP | Defense Meteorological Satellite Program |