| Acronym | Meaning |
 | APL | Applied Physics Laboratory (at Johns Hopkins) |
| MJD | Modified Julian Date |
| AIRS | Atmospheric Infrared Sounder |
| MISR | Multiangle Imaging Spectro-Radiometer |
| ET | Ephemeris Time |
| SID | Sudden Ionospheric Disturbance |
| SPTN | SPARTAN |
| CELSS | Controlled Ecological Life Support System |
| NSO | National Solar Observatory |
| CFC | ChloroFluoroCarbon |
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