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Preliminaries. Brief History of Extragalactic Astronomy 18th-19th centuries - “Nebulae” Cataloging • Charles Messier cataloged 103 nebulous objects. Messier Catalog (M87, M51, M100). Includes famous nearby objects.
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Document Date: 2012-08-20 16:53:13
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Preliminaries. Brief History of Extragalactic Astronomy 18th-19th centuries - “Nebulae” Cataloging • Charles Messier cataloged 103 nebulous objects. Messier Catalog (M87, M51, M100). Includes famous nearby objects.