The History and Philosophy of Astronomy Lecture 21: Hubble. Presentation

Volker Bromm. University of Texas at Austin. Edwin P. Hubble: Mariner of the Nebulae. Hubble’s Early Life. Undergrad at University of Chicago. Rhodes Scholar at Oxford. Cecil Rhodes: Archimperialist. Hubble joins Army in WW I. Mount Wilson Observatory. The Riddle of the Nebulae. The Earl of Rosse discovers Spiral Nebulae. April 1920: The Great Debate: Harlow Shapley vs Heber Curtis. Shapley demotes Sun from Galactic Center (1918). Great Debate: Curtis’ Argument. Curtis’ Rebuttal. Hubble and the Distance to Andromeda. Discovery of Cepheid Variables. What are the Cepheids? Cepheids: Period-Luminosity Relation (1908). Great Debate: Hubble’s Empirical Answer.
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  The History and Philosophyof Astronomy (Lecture 21: Hubble I) Instructor: Volker BrommTA: Jarrett JohnsonThe University of Texas at Austin Astronomy 350L (Fall 2006)  Edwin P. Hubble: Mariner of the Nebulae ã1889 (Missouri)  –1953 (Pasadena) ãleading observationalastronomer of 20 th century: -discovers galaxies (1924):  Milky Way but one ofinnumerable “island universe”-expansion of the universe (1929):  Hubble’s Law:v = H 0 x d  Hubble’s Early Life ã1889: born in Marshfield,Missouriãborn into uppermiddle-class familyã1899: family moves toIllinois (Evanston/Wheaton)ã 1906: Graduation fromHigh-School Hubble memorial in Marshfield  Undergrad at University of Chicago ã1906-10: physics, mathematics, and (at insistence offather) law ã great athletic aptitude
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