| Acronym | Meaning |
 | SEI | Space Exploration Initiative |
| ERS | Environmental Research Satellite |
| MPESS | Multiple Purpose Experiment Support Structure |
| GMRT | Giant Meter-wave Radio Telescope |
| REM | Rat Enclosure Module |
| SSF | Space Station Freedom |
| HPFTP | High Pressure Fuel Turbopump |
| PRTLS | Powered RTLS |
| TOMS | Total Ozone Mapping Spectrometer |
| USML | United States Microgravity Laboratory |
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