| Acronym | Meaning |
| AU | Astronomical Unit |
| ADS | Astrophysical Data System (at Havard-Smithsonian CfA) |
| JERS | Japanese Earth Resources Satellite |
| IOC | In-Orbit Checkout And Calibration |
| LEM | Lunar Excursion Module |
| EURECA | European Retrievable Carrier |
| CNO | Carbon-Nitrogen-Oxygen |
| EUMETSAT | European Meterological Satellite Organisation |
| NRSC | National Remote Sensing Centre |
| EUTELSAT | European Telecommunications Satellite Organization |