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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| Transit 1 |
The passage of a star or other celestial object across the observer’s meridian in the course of the daily apparent motion of the celestial sphere.
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