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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| Celestial Coordinates |
Any system of coordinates that can be used to describe the position of an object on the celestial sphere. Different types of coordinates are used for different applications in astronomy. Those commonly used are equatorial coordinates, horizontal coordinates, ecliptic coordinates and galactic coordinates.
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