The Digester

Tiny red sources in James Webb Space Telescope deep fields are forcing astronomers to rethink how the first massive objects formed, with new evidence pointing to either giant primordial stars or early direct-collapse black holes that could seed later galaxies.

JWST deep-field images since late 2022 revealed numerous tiny red sources dated to about 600 million to 1.5 billion years after the Big Bang.
Their red color reflects extreme cosmic redshift, dust extinction, and JWST's infrared sensitivity.
These objects are unusually compact, bright in the infrared, often show broad emission lines, and are faint or absent in X-rays.
Researchers presented new findings in January 2026 suggesting some little red dots could be supermassive primordial stars or, alternatively, enshrouded heavy-seed black holes formed by direct collapse.
Models matching the observed features favor rapidly accreting direct-collapse black holes enshrouded in dense gas, which would create 100,000-solar-mass seeds early in cosmic history.
If confirmed, this would mean some black holes grew before their galaxies, challenging standard ideas about how galaxies and black holes co-evolved.

Little Red Dots May Reveal How the First Black Holes Formed

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