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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| Dicke Switch |
A technique used in radio astronomy, particularly in microwave work, in which the strength of a cosmic radio signal is compared with the strength of a known terrestrial standard by rapidly switching between the two.
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