When was Radio Telescope invented?

In 1931, an engineer Karl Guthe Jansky of Bell Telephone Laboratories built the first radio antenna to identify an astronomical radio source. Grote Reber in 1937 built the first parabolic dish radio telescope in Illinois. The use of radio telescope is in radio astronomy.

Radio Telescope

Radio Telescope invetor Karl Guthe

Radio Telescope invetor Grote Reber

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