| Abbreviation | Definition |
|---|---|
| DRAA | Durham Region Astronomical Association |
| DRAA | Durham Regional Astronomical Association |
| DRAO | Dominion Radio Astrophysical Observatory |
| DRO | Distant Retrograde Orbit |
| DSN | Deep-Space Network |
| DSOS | Dish Surface Optimization System |
| DVA | Detector Vacuum Assembly |
| E | Earth |
| EAA | Electronically Assisted Astronomy |
| EAAA | Escambia Amateur Astronomer's Association |
| EAAE | European Association Astronomy Education |
| EAAE | European Association for Astronomy Education |
| EAAS | East African Astronomical Society |
| EAAS | East Antrim Astronomical Society |
| eAPJ | Electronic AstroPhysical Journal Letters |
| EARS | Electrostatic Atmospherics Radio Sensor |
| EBE | Extraterrestrial Biological Entity |
| EBL | Everything But Light |
| EBL | Extragalactic Background Light |
| ECA | Earth-Crossing Asteroid |