| Acronym | Meaning |
 | ISU | International Space University |
| MARS | Series Of Soviet Mars Spacecraft |
| UIT | Ultraviolet Imaging Telescope |
| CFHT | Canada-France-Hawaii Telescope |
| HRPT | High Resolution Picture Transmission |
| REM | Rat Enclosure Module |
| OSSA | Office Of Space Science And Applications |
| OTV | Orbital Transfer Vehicle |
| ASS | Antenna Support Structure |
| AACS | Attitude And Articulation Control Subsystem |
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