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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| Hale Observatories |
A name used between 1970 and 1980 for a group of observatories comprising the Palomar Observatory, the Mount Wilson Observatory, the Big Bear Solar Observatory and the Las Campanas Observatory.
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