| Acronym | Meaning |
 | NRAO | National Radio Astronomy Observatory |
| TSS | Targeted Search System / Tethered Satellite System |
| KAO | Kuiper Airborne Observatory |
| SLF | Shuttle Landing Facility |
| S/C | SpaceCraft |
| IOTA | Infrared-Optical Telescope Array |
| HRSR | High-Resolution Scanning Radiometer |
| EROS | Earth Resources Observations System |
| FIR | Far InfraRed |
| RTG | Radioisotope Thermoelectric Generator |
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