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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| Keplerian Telescope |
A simple telescope in which convex lenses are used as both objective and eyepiece. This gives a larger field of view and higher magnification than the Galilean telescope, but the image is inverted.
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