| Acronym | Meaning |
 | CNES | Centre National D'Etude Spatiales |
| FEM | Flight-Engineering Model |
| IDA | International Dark-sky Association |
| CRL | Communication Research Lab |
| FOLD | Federally-Owned LANDSAT Data |
| CHARA | Center For High Angular Resolution Astronomy |
| ISO | Infrared Space Observatory |
| FFCC | Free-Flyer Control Centre |
| GBT | Green Bank Telescope |
| SR | Special Relativity |
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