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A comment on All disk galaxies rotate once every billion years: study. Parent comment

Re:All disk galaxies rotate once every billion years: study by Merad on Wednesday March 14, 2018 @01:08PM (#16586322)
I believe the current theory is that most (all?) galaxies have a supermassive black hole at their heart.
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Re:All disk galaxies rotate once every billion years: study by muthdra on Wednesday March 14, 2018 @01:23PM (#16586488)
Yeah, or so I heard. What's the cause and effect order for galaxies and their corresponding supermassive black holes?
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