| Acronym | Meaning |
 | MOMV | Manned Orbital Maneuvering Vehicle |
| OGO | Orbiting Geosurvey Observatories |
| FRC | Flight Research Center |
| KAO | Kuiper Airborne Observatory |
| FFCC | Free-Flyer Control Centre |
| UPPP | Union Pour La Promotion De La Propulsion Photonique |
| CCAFS | Cape Canaveral Air Force Station |
| ACE | Advanced Composition Explorer |
| DOR | Differenced One-way Range |
| NTR | Nuclear Thermal Rocket(ry) |
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