The Great Debate – 1920


Richard Hammar addressed the Springfield (Missouri) Astronomy Club on June 27, 2012, on the “Great Debate” between astronomers Harlow Shapley and Heber Curtis on the Scale of the Universe.


  • January 5, 2015

    I liked the teaching session but wished that I could see your examples. Per haps you should post or tell me were to find out abiut your next metting place.

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