| Acronym | Meaning |
| IMU | Inertial Measurement Unit |
| EUVE | Extreme UltraViolet Explorer |
| CIS | Commonwealth Of Independent States |
| DFRF | Dryden Flight Research Facility |
| WFPCII | Replacement For WFPC |
| AMSR | Advanced Microwave Sounding Radiometer |
| ESRO | European Space Research Organisation |
| OTV | Orbital Transfer Vehicle |
| BD | Bonner Durchmusterung (catalog) |
| VLT | Very Large Telescope |