| Acronym | Meaning |
 | DAO | Dominion Astrophysical Observatory |
| RPM | Retro Propulsion Module |
| NIR | Near InfraRed |
| ARC | Ames Research Center (NASA) |
| SAA | South Atlantic Anomaly / Single Access Antenna |
| HRSR | High-Resolution Scanning Radiometer |
| AXAF | Advanced X-ray Astrophysics Facility |
| SWLC | Salt Water Leak Check |
| TEA | Torque Equilibrium Attitude |
| CITA | Canadian Institute For Theoretical Astrophysics |
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