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am_Unition · 1614 days ago · link · · parent · post: A Mysterious Rhythm Is Coming From Another Galaxy
It's always nutation of neutron stars, if intra-Milky Way, or nutation of galactic nuclei quasars, etc. if from another galaxy. Black holes are permitted spin. Do they "precess"? edit: they do, duh, 'cuz quasars are black holes