| Acronym | Meaning |
 | USN | United States Navy |
| IUS | Inertial Upper Stage |
| CATS | Cheap Access To Space |
| HB | Horizontal Branch |
| HLV | Heavy Lift Vehicle |
| CHARA | Center For High Angular Resolution Astronomy |
| INCO | Integrated Communications Officer |
| TIROS | Television InfraRed Observation Satellite |
| CADH | Communications And Data Handling |
| RASC | Royal Astronomical Society Of Canada |
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