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 |
|---|---|
| Thermal Radiation |
Electromagnetic radiation arising from the thermal state i.e. temperature of the emitter, as opposed to non-thermal radiation, which is emitted by energetic electrons that are not necessarily in thermodynamic equilibrium.
See also: black body radiation.
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