| Acronym | Meaning |
| WD | White Dwarf |
| SAA | South Atlantic Anomaly / Single Access Antenna |
| ASTER | Advanced Spaceborne Thermal Emission And Reflection |
| DACS | DATA Acquisition And Control Subsystem |
| MOPITT | Measurements Of Pollution In The Troposphere |
| ET | External Tank |
| DCA | Defense Communications Agency |
| CITA | Canadian Institute For Theoretical Astrophysics |
| VLBA | Very Long Baseline Array |
| GOX | Gaseous OXygen |