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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| Schedar Schedir; Alpha Cassiopeiae; |
The brightest star in the constellation Cassiopeia. It is a supergiant K star with a magnitude near 2.2, though it is slightly variable. The Arabic name means breast.
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