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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| Torus |
A three-dimensional ring shape, such as that of a ring doughnut or quoit; the orbit of Io around Jupiter is enclosed in a plasma torus.
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