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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| Peculiar Star |
A star whose spectrum shows unusual features compared with the majority of stars of its spectral type. A p after the spectral type is used to indicate that a star is considered peculiar. The term is most frequently applied to a group of stars in spectral classes A and B.
See also: Ap star.
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