E
| Acronym | Meaning |
| E-E | end-to-end |
| EEE | Electrical, Electronic, Electromechanical |
| EGSE | Electrical Ground Support Equipment |
| EIRP | Equivalent Isotropic Radiated Power |
| ELV | Expendable Launch Vehicle |
| EMC | Electromagnetic Compatibility |
| EMI | Electromagnetic Interference |
| EOL | End of Life |
| EOM | End of Mission |
| EOT | End of Track |
| EPS | Electrical Power Subsystem |
| ESA | European Space Agency |
| ESN | Essential Services Node |
| ETU | Engineering Test Unit |
| EU | Engineering Units |
| EUV | Extreme Ultraviolet Extreme Ultraviolet Imager |
F
| Acronym | Meaning |
| FDF | Flight Dynamics Facility |
| FEDS | Front End Data System |
| FOV | Field of View |
| fp | Plasma Frequency |
| fps | feet per second |
| FSS | Fan Sun Sensor |
| FTP | File Transfer Protocol |
| FU | Flight Unit |
| FUV | Far Ultraviolet Far Ultraviolet Imager |
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