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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| Mayall Telescope |
A 4-metre 158-inch optical reflecting telescope at Kitt Peak National Observatory, belonging to the US National Optical Astronomy Observatories. It has been in operation since 1973.
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