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Upextragalactic astronomy

cosmology
subjectfact 
cosmologyhas definition The study of the origin, structure, and evolution of the Universe on the largest possible scale. In present usage, it frequently includes cosmogony.has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:32.0
is a kind of extragalactic astronomy2001-09-27 09:32:32.0

Kinds of cosmology :