Galaksi spiral: Pabidaan ralatan
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[[File:M101 hires STScI-PRC2006-10a.jpg|thumb|Contoh galaksi spiral, An example of a spiral galaxy, [[Galaksj kincir]] (dipinandui jua lawan ngaran Messier 101 atawa NGC 5457)|285x285px]]
'''Galaksi spiral''' mambantuk [[klasifikasi morfologi galaksi|kelas matan
Galaksi spiral dingarani sasuia lawan struktur spiralnya nang bapanjang mulai hinti sampai ka cakram galaksinya. Tangan matan galaksi spiral marupakan tampat formasi bintang nang hanyar wan tatarang pada cakram di sakulilingnya maraga [[Bintang OB]] masih anum, wan panas baandak disana.
Roughly two-thirds of all spirals are observed to have an additional component in the form of a bar-like structure,<ref name="mihalas1968">{{Cite book| author=D. Mihalas | date=1968 | title=Galactic Astronomy | publisher=W. H. Freeman | isbn=978-0-7167-0326-6}}</ref> extending from the central bulge, at the ends of which the spiral arms begin. The proportion of [[Barred spiral galaxy|barred spirals]] relative to [[Unbarred spiral galaxy|barless spirals]] has likely changed over the history of the [[universe]], with only about 10% containing bars about 8 billion years ago, to roughly a quarter 2.5 billion years ago, until present, where over two-thirds of the [[galaxy|galaxies]] in the visible universe ([[Hubble volume]]) have bars.<ref>{{cite web |url= https://www.sciencedaily.com/releases/2014/01/140116085103.htm |title= Hubble and Galaxy Zoo Find Bars and Baby Galaxies Don't Mix |date= 16 January 2014 |website= [[Science Daily]] }}</ref>
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