The sun’s corona during a solar eclipse on July 29, 1878// photo by Henry Draper. November 15, 2014 Source: http://humanoidhistory.tumblr.com/
Plate V. Total solar eclipse, July 29th, 1878. Published in 1887. August 13, 2014 Source: https://t.umblr.com/redirect?z=https%3A%2F...
