VERSION|0.5.1|NAME|HarryR|DATE|1365166016|CONTENT|@David Harper / @Steve - thanks for that.

How does the gas of one of the colliding galaxies end up rotating in the opposite direction to all the stars from the same galaxy? 

From the Hubble page:
[blockquote]As in the majority of galaxies, all of the stars in M64 are rotating in the same direction[/blockquote]

Hmm. Therefore there is a minority of galaxies where that&#039;s not the case. Can anyone name a couple that I can read up about? Presumably this happens following collision while the stuff in the now combined galaxy is still unstable (?)|IP-ADDRESS|178.19.210.162|MODERATIONFLAG|