Space exploration began with the launch of Sputnik and Astrophysics was born as the application of physics to the phenomena observed by Astronomy, which etymologically means laws of the stars.
There are 2759 entries in this glossary.| Term | Definition |
|---|---|
| Flux Density |
The energy in a beam of radiation passing through unit area normal to the beam in one unit of time. In radio astronomy, flux density, measured in janskys Jy, is the energy received from a radio source per unit area of detector per unit frequency interval.
|