| Acronym | Meaning |
 | USMP | United States Microgravity Payload |
| JPL | Jet Propulsion Laboratory |
| PMC | Permanently Manned Capability |
| MIMR | Multifrequency Imaging Microwave Radiometer |
| TDRS | Tracking And Data Relay Satellite |
| EOS | Electrophoresis Operations In Space |
| AGB | Asymptotic Giant Branch |
| LDEF | Long Duration Exposure Facility |
| NASDA | NAtional Space Development Agency |
| ET | Ephemeris Time |
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