| Acronym | Meaning |
 | TPS | Thermal Protection System |
| PPM | Positions And Proper Motions (catalog) |
| MDSSC | McDonnell Douglas Space Systems Corp |
| ISEP | Isolated/Stabilized Exercise Platform |
| NTR | Nuclear Thermal Rocket(ry) |
| TOPS | Toward Other Planetary Systems |
| SAR | Search And Rescue / Synthetic Aperture Radar |
| GDCLS | General Dynamics Commercial Launch Services |
| SOCC | Satellite Operations Control Center |
| DESAT | Desaturation |
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