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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| Ae Star |
An A star that shows emission lines of hydrogen superimposed on the absorption lines in its spectrum. Such emission may arise from interactions between the two members of a close binary system.
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