Edwin Hubble at the controls of the 100-inch telescope at Mount Wilson, circa 1922. [768 x 837] : r/Astronomy
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Hubble space telescope turns 25
Edwin Hubble looking through the 100-inch Hooker telescope at the Carnegie Institution for Science Mount Wilson in Southern California, 1929 discovers the Universe is Expanding. Credit: Margaret Bourke-White/Time & Life Pictures/Getty Images. –