| Acronym | Meaning |
| AOA | Angle Of Attack |
| PAM-D | Payload Assist Module |
| AEPI | Atmospheric Emissions Photometric Imaging |
| ETE | End-to-End |
| RASC | Royal Astronomical Society Of Canada |
| THIR | Temperature/Humidity Infrared Radiometer |
| ISPM | International Solar Polar Mission |
| SPARTAN | Shuttle Pointed Autonomous Research Tool For Astronomy |
| ZHR | Zenith Hourly Rate |
| ISZ | Iskusstvenniy Sputnik Zemli |