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Date: 2012-01-12 15:26:16Obsolete scientific theories Natural philosophers Cosmologists Johannes Kepler Tycho Brahe Somnium Heliocentrism Kepler Celestial spheres Astronomy Science Spacecraft | The Astronomers Tycho Brahe and Johannes KeplerAdd to Reading ListSource URL: xrtpub.harvard.eduDownload Document from Source WebsiteFile Size: 331,44 KBShare Document on Facebook |