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Another Early Universe Surprise from the JWST: A Mature Galaxy Cluster

Summary by Universe Today
The JWST found a galaxy cluster from 10 billion years ago that's far more developed than it should be, according to cosmological models. The cluster is also the most distant strong gravitational lens that we know of. Detailed observations across the spectrum show that the cluster is still undergoing mergers.

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Another Early Universe Surprise from the JWST: A Mature Galaxy Cluster

The JWST found a galaxy cluster from 10 billion years ago that's far more developed than it should be, according to cosmological models. The cluster is also the most distant strong gravitational lens that we know of. Detailed observations across the spectrum show that the cluster is still undergoing mergers.

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Universe Today broke the news in United States on Monday, June 22, 2026.
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