| Acronym | Meaning |
 | LARC | Langley Research Center |
| APL | Applied Physics Laboratory (at Johns Hopkins) |
| HIRS | High Resolution Infrared Radiation Sounder |
| KTB | Cretaceous-Tertiary Boundary |
| TAI | International Atomic Time |
| VLF | Very Low Frequency |
| MRIR | Medium Resolution Infrared Radiometer |
| IFEA | Integrated Furnace Experiment Assembly |
| LEDA | On-line Earthnet Data Access |
| BFC | Backup Flight Computer |
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