| Acronym | Meaning |
 | GNC | Guidance |
| AFP | Air Force Program |
| VLBI | Very Long Baseline Interferometry |
| VOIR | Venus Orbiting Imaging Radar |
| VLA | Very Large Array |
| NSA | National Security Agency |
| PV | Photovoltaic |
| RTG | Radioisotope Thermoelectric Generator |
| EMU | Extravehicular Mobility Unit |
| KPNO | Kitt Peak National Observatory |
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