There are many worlds and many systems of Universes existing all at the same time, all of them perishable.

— Anaximander 546 BC

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We may have finally solved cosmology's chicken-or-the-egg problem

New Scientist - Mon, 06/15/2026 - 5:00am
Galaxies and their supermassive black holes evolve together, but which came first is an ongoing question. Now we may finally have an answer, says columnist Leah Crane
Categories: Astronomy