| Acronym | Meaning |
 | AXAF | Advanced X-ray Astrophysics Facility |
| RCS | Reaction Control System / Revision Control System |
| SAIL | Shuttle Avionics Integration Laboratory |
| IMU | Inertial Measurement Unit |
| AFGWC | Air Force Global Weather Center |
| CNO | Carbon-Nitrogen-Oxygen |
| A&A | Astronomy And Astrophysics |
| NESDIS | National Environmental Satellite Data And Information Service. |
| MFV | Main Fuel Valve |
| OMS | Orbital Maneuvering System |
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