Post B4znw0lf0ipjB53t2G by DazzaNZ@noauthority.social
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 (DIR) Post #B4znw0lf0ipjB53t2G by DazzaNZ@noauthority.social
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       @Djeep That was excellent.I think that galaxies are like that too, the spiral arms are waves, the waves go around the galaxy but the stars themselves are not actually moving much, they are just getting closer together or further apart as the wave passes the groupings of stars, clustering the stars into arms, or speeding them into voids.