| Acronym | Meaning |
 | GR | General Relativity |
| AFPRO | Air Force Plan Representative Office |
| GEODSS | Ground-based Electro-optical Deep-space Surveillance System |
| ISAMS | Improved Stratospheric And Mesospheric Sounder |
| HPFTP | High Pressure Fuel Turbopump |
| SWLC | Salt Water Leak Check |
| NPO | Scientific Production Organization |
| RCC | Reinforced Carbon-Carbon |
| XMM | X-ray Multi Mirror |
| LRSI | Low-temperature Reusable Surface Insulation |
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