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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| Scintillation |
Twinkling - the rapid variations in the brightness of a star caused by random refraction in turbulent layers of the Earth’s atmosphere. A similar phenomenon affecting radio signals from celestial sources occurs in the Earth’s ionosphere and also in the ionized gas in both the interplanetary and interstellar media.
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