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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| Herschelian Telescope |
A type of reflecting telescope designed by William Herschel 1738-1822, in which the paraboloid primary mirror is tilted so that its focus lies outside the main tube of the telescope and can be accessed without obstructing the incoming light. The system has the disadvantage that distortions are introduced, and it was soon superseded by other types of reflector.
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