JWST may have seen black holes suppressing the creation of new stars


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Illustration of a supermassive black hole

Stuart Thomson/Alamy

Supermassive black holes seem to stop stars forming in their enormous host galaxies – and the James Webb Space Telescope (JWST) may have caught them in the act for the first time.

Many of the most massive galaxies in our cosmic neighbourhood are in a “quiescent” state, where no new stars seem to have been born for a long time. Astronomers have long suspected that the supermassive black holes at the centre of many galaxies might be responsible by somehow disturbing the clouds of gas …

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