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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| Elnath Alnath; Beta Tauri; β Tau |
The second-brightest star in the constellation Taurus, marking the tip of one of the bull’s horns. Its name comes from the Arabic for the one butting with horns. It also represented the right foot of neighbouring Auriga, and formerly shared the alternative designation Gamma Aurigae. Elnath is a B star of magnitude 1.7.
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