| Acronym | Meaning |
| SL | (Comet) Shoemaker-Levy / SpaceLab |
| HRSI | High-temperature Reusable Surface Insulation |
| A&A | Astronomy And Astrophysics |
| AMSR | Advanced Microwave Sounding Radiometer |
| DOR | Differenced One-way Range |
| ATCS | Active Thermal Control System |
| SAA | South Atlantic Anomaly / Single Access Antenna |
| POEM | Polar Orbiting Earth Mission |
| SEST | Swedish ESO Submillimeter Telescope |
| ASRM | Advanced Solid Rocket Motor |