| Acronym | Meaning |
 | ET | Ephemeris Time |
| TIROS | Television InfraRed Observation Satellite |
| WFF | Wallops Flight Facility |
| PMC | Permanently Manned Capability |
| XUV | Extreme Ultraviolet |
| HERA | Hermes Robotic Arm |
| RIACS | Research Institute For Advanced Computer Science |
| EDOMP | EDO Medical Project |
| CSM | Command And Service Module |
| SIRTF | Space InfraRed Telescope Facility |
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