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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| Declination Circle |
A graduated disc or circle fitted to an equatorial mounting in order to indicate the declination coordinate of the direction in which the telescope is pointing.
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