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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| Uraniborg |
The observatory of Tycho Brahe 1546-1601 on the island of Hven, north of Copenhagen. It was completed in 1580 and used by Brahe to make accurate astronomical observations for twenty years. Only ruins now remain.
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