| Acronym | Meaning |
 | AFETR | USAF's ETR |
| CRAF | Comet Rendezvous/Asteroid Flyby |
| NASA | National Aeronautics And Space Administration |
| MITI | Ministry Of International Trade And Industry |
| HLC | Heavy Lift Capability |
| ML | Mobile Launcher |
| ACTS | Advanced Communications Technology Satellite |
| DRAO | Dominion Radio Astrophysical Observatory |
| CNES | Centre National D'Etude Spatiales |
| SPARTAN | Shuttle Pointed Autonomous Research Tool For Astronomy |
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