| Acronym | Meaning |
 | AACS | Attitude And Articulation Control Subsystem |
| GAS | Get-Away Special |
| SSO | Spurious Shut-off |
| SAO | Smithsonian Astrophysical Observatory |
| UT | Universal Time |
| LGM | Little Green Men |
| UARS | Upper Atmosphere Research Satellite |
| KPNO | Kitt Peak National Observatory |
| AAS | American Astronautical Society |
| EURECA | European Retrievable Carrier |
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