| Acronym | Meaning |
| MNRAS | Monthly Notices Of The Royal Astronomical Society |
| MSU | Microwave Sounding Unit |
| PASS | Primary Avionics Software System |
| COBE | COsmic Background Explorer |
| MARS | Series Of Soviet Mars Spacecraft |
| HIRDLS | High Resolution Dynamics Limb Sounder |
| LM | Lunar Module |
| AEPI | Atmospheric Emissions Photometric Imaging |
| HJD | Helicentric Julian Date |
| ERS | Environmental Research Satellite |