„Shapley–Curtis-vita” változatai közötti eltérés

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[[Image:Andromeda_galaxy.jpg|thumb|250px|Az [[Androméda-galaxis]] [[Ultraibolya sugárzás|ultraviola]] fényben]]
 
In [[astronomy]], the '''Great Debate''', also called the '''Shapley–Curtis Debate''', was an influential [[debate]] between the astronomers [[Harlow Shapley]] and [[Heber Curtis]] which concerned the nature of [[spiral galaxy|spiral]] [[nebula]]e and the [[Universe#Size.2C_age.2C_contents.2C_structure.2C_and_laws|size of the universe]]. The basic issue under debate was whether distant nebulae were relatively small and lay within our own [[galaxy]] or whether they were large, independent galaxies. The debate took place on 26 April 1920, in the [[Spencer Baird|Baird]] auditorium of the [[Smithsonian]] [[National Museum of Natural History|Museum of Natural History]]. The two scientists first presented independent technical papers about "The Scale of the Universe" during the day and then took part in a joint discussion that evening. Much of the lore of the Great Debate grew out of two papers published by Shapley and Curtis in the May 1921 issue of the ''Bulletin of the [[United States National Research Council|National Research Council]]''. The published papers each included counter arguments to the position advocated by the other scientist at the 1920 meeting.