Lecture18 - Signature Course UGS 303(Fall 2009 Edwin P...

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1 The History and Philosophy of Astronomy (Lecture 18: Hubble I) Instructor: Volker Bromm The University of Texas at Austin Department of Astronomy Signature Course UGS 303 (Fall 2009) Edwin P. Hubble: Mariner of the Nebulae 1889 (Missouri) – 1953 (Pasadena) • leading observational astronomer of 20 th century: - discovers galaxies (1924): Milky Way but one of innumerable “island universe” - expansion of the universe (1929): Hubble ʼ s Law: v = H 0 x d Hubble ʼ s Early Life • 1889: born in Marshfield, Missouri • born into upper middle-class family • 1899: family moves to Illinois (Evanston/Wheaton) 1906: Graduation from High-School Hubble memorial in Marshfield Undergrad at University of Chicago • 1906-10: physics, mathematics, and (at insistence of father) law great athletic aptitude
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2 Rhodes Scholar at Oxford • 1910-12: Queen ʼ s College continued athletic prowess Cecil Rhodes: Archimperialist • 1903: Rhodes Scholarship program established! Cecil Rhodes (1853-1902) PhD Thesis at Yerkes, Univ. of Chicago • PhD 1917: “Photographic Investigations of Faint Nebulae” Hubble joins Army in WW I • 1917-19: Major Hubble, 86 th Division
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3 Mount Wilson Observatory • 1919 onwards: world ʼ s largest telescope Mount Wilson Observatory George Hale (1868-1938) 100-inch Hooker Telescope Mount Wilson Observatory “The Monastery”: Mt Wilson ʼ s library The Riddle of the Nebulae • Big Q: What are the (Spiral) Nebulae?
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