One of the biggest contributions of Edward Pickering, who was the director of Harvard College Observatory for 42 years (1876-1918), is initiating a program to map the variability of objects in the night sky [1]. One of the main consequences of this program was to collect a huge number of…
Some observations of the Orion Nebula from 1907 by Henrietta Leavitt.
(images: phaedra0945 and NASA, ESA, M. Robberto and the Hubble Space Telescope Orion Treasury Project Team)
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"Examination of spectra in region of Ring Nebula in Lyra to Supply Classes of Spectra for Kevin Burns" Williamina Fleming notebook entry from 1909.
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(images: NASA, ESA and the Hubble Heritage and phaedra0819)
today's #visitorbookspotlight is Sir William Ramsay. He visited the Harvard College Observatory on Oct. 27th, 1912. He was a Scottish chemist who received a Nobel Prize in Chemistry in 1904. (phaedra0790)
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