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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| Garnet Star |
An informal name, first used by William Herschel, for the strikingly red star μ Mu Cephei. It is a red supergiant and a semiregular variable ranging in magnitude between 3.6 and 5.1.
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