Wax ka sii qor faqradan - Daahfurka dabeecadda galaxyada oo ka duwan nebulae-yada kale (daruuraha xiddigaha dhexdooda) waxaa la sameeyay 1920-kii
Waxaad Tijaabooyinkii ugu horreeyay ee taxanaha taxanaha ah ee galaxyada waxaa la sameeyay 1960-yadii, iyadoo Catalogue of Galaxies and Clusters of Galaxies ay ku taxan yihiin 29,418 galaxies iyo galaxy clusters, iyo Catalogue Morphological of Galaxies, oo ah liis dhammaystiran oo ah galaxies oo leh cabir sawir leh oo ka sarreeya 15, liis gareynaya 30,642. 1980-yadii, Kooxaha Lyons ee Galaxies waxay liis gareeyeen 485 kooxood oo galaxy ah oo leh 3,933 xubnood oo galaxy ah. Galaxy Zoo waa mashruuc ujeedadiisu tahay liis dhamaystiran: waxaa la bilaabay bishii Luulyo 2007, waxay kala saartey in ka badan hal milyan oo sawirro galaxy ah oo ka yimid The Sloan Digital Sky Survey, Hubble Space Telescope iyo Golaha Cosmic Near-Infrared Deep Extragalactic Legacy Survey.