In every picture we see that galaxies are spiral, why so? are there any other shapes possible?


marked as duplicate by StephenG, Kyle Kanos, G. Smith, Thomas Fritsch, Cosmas Zachos Jun 12 at 21:18

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  • $\begingroup$ Welcome to physics.SE! Have you checked online, e.g. en.wikipedia.org/wiki/Galaxy ? $\endgroup$ – Vangi Jun 12 at 19:12
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    $\begingroup$ Not every picture of a galaxy is spiral. There are elliptical galaxies out there. $\endgroup$ – Kyle Kanos Jun 12 at 19:31

Yes, other shapes are possible. For example, here is a picture from NASA of M87, an elliptical galaxy:

enter image description here

It doesn’t look spiral at all.


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