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Galaxy formation and evolution
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== Gallery == <gallery> A young elliptical.jpg|[[NGC 3610]] shows some structure in the form of a bright disc, implying that it formed only a short time ago.<ref>{{cite web|title=A young elliptical|url=http://www.spacetelescope.org/images/potw1546a/|access-date=16 November 2015}}</ref> NGC891.jpg|[[NGC 891]], a very thin disk galaxy M101 hires STScI-PRC2006-10a.jpg|An image of [[Messier 101]], a prototypical [[spiral galaxy]] seen face-on warped galaxy.jpg|A spiral galaxy, [[ESO 510-G13]], was warped as a result of colliding with another galaxy. After the other galaxy is completely absorbed, the distortion will disappear. The process typically takes millions if not billions of years. Simulation β A Disk Galaxy Forms.webm|A video of a galaxy forming in an IllustrisTNG astrophysical simulation<ref>{{cite web |title=APOD: 2023 May 31 β Simulation: A Disk Galaxy Forms |url=https://apod.nasa.gov/apod/ap230531.html |website=apod.nasa.gov |access-date=17 April 2025}}</ref> </gallery>
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