| Acronym | Meaning |
 | DAO | Dominion Astrophysical Observatory |
| NBS | National Bureau Of Standards |
| OCST | Office Of Commercial Space Transportation |
| RIACS | Research Institute For Advanced Computer Science |
| ENACEOS | ENAC For EOS |
| ASEM | Assembly Of Station By EVA Methods |
| MRIR | Medium Resolution Infrared Radiometer |
| OSSE | Oriented Scintillation Spectrometer Experiment |
| ER | Eastern Range |
| EDO | Extended Duration Orbiter |
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