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 Axis |
One of the two axes about which an equatorially mounted telescope can rotate the other being the polar axis. Movement around the declination axis allows the telescope to point to different declinations while the right ascension remains constant.
See also: equatorial mounting.
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