Historical Telescopes https://science.nrao.edu/facilities/gbt/other-telescopes/historical https://science.nrao.edu/@@site-logo/headergraphic_v3.png Historical Telescopes Jansky Antenna The discovery of cosmic radio waves Reber Telescope The first surveys of "cosmic static" Ewen-Purcell Horn Discovery of 21cm emission from hydrogen Tatel Telescope Early astronomy at Green Bank 300 Foot Telescope
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