Supermassive black holes 'too big' for the early universe may not be so massive after all

These are still enormous objects, but they lie at the lower end of the supermassive black hole population rather than among the most extreme examples. In the four years that the James Webb Space Telescope (JWST) has been making observations of the early universe, it has been delivering one scientific milestone after another. However, the $10 billion telescope has also left astronomers with a massive problem — literally [1].

Sources

1. space.com · Supermassive black holes 'too big' for the early universe may not be so massive after all Sep 2, 2026

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