| Acronym | Meaning |
 | ECA | Earth-crossing Asteroids |
| NIH | National Institute Of Health |
| APD | Advanced Planning Division |
| DC | Direct Current |
| TCZ | Tropical Cloud Zone |
| EIR | Eidgenossisches Institut Fur Reaktorforschung |
| AE | Architect/engineer |
| EOSDIS | Earth Observing System Data And Information System |
| DS-1 | Digital Signal 1 |
| NTN | National Telecommunications Network |
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