1929: Edwin Hubble Discovers the Universe is Expanding | Everyday Cosmology
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Edwin Hubble at the controls of the 100-inch telescope at Mount Wilson, circa 1922. [768 x 837] : r/space
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Hubble's Other Telescope And The Day It Rocked Our World : NPR
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Hubble's Other Telescope And The Day It Rocked Our World : NPR
Hubble Space Telescope - Wikipedia
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Meet Edwin Hubble in a Hubble 25th Anniversary Video - NASA Science
Edwin Hubble - Wikipedia
Edwin Hubble and the expanding universe | EarthSky
Edwin Hubble looking through the 100-inch Hooker telescope at Mount Wilson in Southern California, 1929 discovers the Universe is Expanding. Credit: Margaret Bourke-White/Time & Life Pictures/Getty Images. – sciencesprings
Snapshots of the star that changed the Universe | ESA/Hubble