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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| Reddening |
A change in the distribution of continuum electromagnetic radiation from a source such that the intensity at longer wavelengths is enhanced and that at shorter wavelengths diminished. Reddening occurs when light travels through the interstellar medium.
See also: interstellar reddening.
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