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 |
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| Radio Brightness Distribution |
The distribution across the sky of the radio emission from an extended radio source, expressed as radio flux density per unit solid angle as a function of position. It can be displayed as a contour map, or computer processed to produce an image similar to an optical photograph.
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