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The universe should be packed with tiny galaxies — so where are they?

The study found a peak then decline in tiny galaxies during the Epoch of Reionization, suggesting intense radiation suppressed their formation, based on data from JWST and Abell 2744 lensing.

Summary by Space
There may not be as nearly as many small galaxies in the early universe as astronomers predict there should be, which has big implications for the story of how our universe grew up.

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The universe should be packed with tiny galaxies — so where are they?

There may not be as nearly as many small galaxies in the early universe as astronomers predict there should be, which has big implications for the story of how our universe grew up.

·United States
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Space broke the news in United States on Wednesday, January 14, 2026.
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