Skup Virgo: razlika između verzija

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Sjajnije galaksije u skupu otkrio je još [[Charles Messier]] sredinom XVIII vijeka. Prva otkrivena galaksija je bila [[Messier 49|M49]]. Messier je kasnije otkrio i [[Messier 87|M87]], dominantnu galaksiju skupa. Zbog svog slabog [[teleskop]]a, Messier nije uspio otkriti pravu prirodu galaksija nego ih je smatrao mrljama bez [[zvijezda]]. Da se radi o drugim galaksijama, shvatilo se tek u 20-im godina XX vijeka.<ref>Following the entry for M91 in the Connoissance des Temps for 1784, Messier added the following note:
: ''The constellation of Virgo, & especially the northern Wing is one of the constellations which encloses the most Nebulae: this Catalog contains thirteen which have been determined: viz. Nos. 49, 58, 59, 60, 61, 84, 85, 86, 87, 88, 89, 90, & 91. All these nebulae appear to be without stars: one can see them only in a very good sky, & near their meridian passage. Most of these nebulae have been pointed to me by Mr. Méchain.'' (see [http://www.seds.org/messier/Mdes/dm091.html M91] {{Webarchive|url=https://web.archive.org/web/20080516053202/http://www.seds.org/messier/Mdes/dm091.html |date=16. 5. 2008 }}.)</ref>
 
Skup je po sastavu heterogena mješavina [[Eliptična galaksija|eliptičnih]] i [[Spiralna galaksija|spiralnih galaksija]].<ref>{{Cite journal |unused_data = first10 - Michael J. |doi = 10.1086/421490 |last1 = Côté |first1 = Patrick |last2 = Blakeslee |first2 = John P.