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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| Leo Minor The Little Lion |
A small and very inconspicuous constellation between Leo and Ursa Major. It was introduced by Johannes Hevelius in the late seventeenth century and contains only one star brighter than fourth magnitude.
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