| Acronym | Meaning |
| NIR | Near InfraRed |
| RMCD | Radaiation Monitoring Container Device |
| ACF | Automated Control Function |
| WFPC | Wide Field/Planetary Camera |
| DRSS | DATA Relay Satellite System |
| MPESS | Multiple Purpose Experiment Support Structure |
| MACS | Modular Attitude Control System |
| MMT | Multiple Mirror Telescope |
| GRO | Gamma Ray Observatory |
| VAS | VISSR Atmospheric Sounder |