Galaxies rotate once every billion years
We all know all planets are rotated and few of them rotate in one day and few of them took 1 month and few of them took 1 year to complete his rotation and do you know all galaxies which size is regardless and then they complete there rotation it took billion years to complete the rotation
Release the Kraken! You got a 3.45% upvote from @seakraken courtesy of @moneyfarmers!