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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| Adhara Epsilon Canis Majoris; ε Cma |
he second-brightest star, after Sirius, in the constellation Canis Major. It is a giant B star of magnitude 1.5 and has an eighth magnitude companion. The Arabic name means the virgins.
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