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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| Beta Canis Majoris Star β Cma Star |
A type of giant B star that shows short-period variations in brightness and in its spectrum. These stars are variable because they pulsate. Their periods are under seven hours, and the light variation is no more than a tenth of a magnitude. The first such star to be discovered was Beta Cephei, and members of this class of variables are also known as Beta Cephei stars.
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