I believe the galaxy itself is also moving through the universe too, so the spot it’s at in the universe when it completes one revolution may not be the same spot its at when it completes the next revolution. Assuming I’m remembering this right, of course.
I believe the galaxy itself is also moving through the universe too, so the spot it’s at in the universe when it completes one revolution may not be the same spot its at when it completes the next revolution. Assuming I’m remembering this right, of course.