| Acronym | Meaning |
 | BFCS | Backup Flight Control System |
| M | Messier |
| RKA | Rossiskoye Kosmicheskoye Agentsvo |
| TOMS | Total Ozone Mapping Spectrometer |
| IFEA | Integrated Furnace Experiment Assembly |
| ATCS | Active Thermal Control System |
| LERC | Lewis Research Center |
| CELSS | Controlled Ecological Life Support System |
| ERS | Earth Resources Satellite |
| MIMR | Multifrequency Imaging Microwave Radiometer |
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