| Acronym | Meaning |
 | SOFIA | Stratospheric Observatory For Infrared Astronomy |
| NRO | National Reconnaissance Office |
| IGBP | International Geosphere/Biosphere Programme |
| AOCS | Attitude And Orbit Control System |
| ACTS | Advanced Communications Technology Satellite |
| HERA | Hermes Robotic Arm |
| CGF | Crystal Growth Furnace |
| SAA | South Atlantic Anomaly / Single Access Antenna |
| AFGWC | Air Force Global Weather Center |
| OARE | Orbital Acceleration Research Experiment |
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