Astronomers find object 660 million years after Big Bang that may be a 'black hole star'

A newly discovered cosmic object — a supermassive black hole wrapped in dense gas — may explain how billion-solar-mass black holes formed so early in the universe.

An object discovered 660 million years after the Big Bang produces 100 billion times more energy than any known star, yet appears to be not a star at all — but a supermassive black hole encased in an extraordinarily dense envelope of gas. Published in the journal Nature, the discovery describes a source with properties unlike anything previously observed: an unusually strong hydrogen Balmer break, broad multi-peaked emission lines, and Balmer absorption across multiple transitions — a combination that researchers say is best explained by a black hole surrounded by turbulent, dust-free gas. The object is roughly the size of our entire solar system in apparent extent and glows with a brilliant red light detectable billions of light years away. Researchers modeled it as a black hole accreting matter far beyond its normal theoretical limit — a process called super-Eddington accretion — which would allow the black hole to grow to billions of solar masses in a fraction of the universe's current age. The find bears directly on one of astrophysics' most stubborn puzzles: how did supermassive black holes — some weighing a billion times the mass of our sun — come to exist within the universe's first 700 million years, a period called cosmic dawn? Standard growth models struggle to account for the timescale. The new object appears to be a real-world example of a theoretical configuration — a black hole embedded in dense gas — that could make such rapid growth physically possible. The source also sits near a brighter neighboring object, and researchers note that if the two were to merge, the combined system would resemble a class of puzzling red objects previously spotted by the James Webb Space Telescope whose origins have been debated.

Why it matters

Supermassive black holes in the early universe have long defied explanation, and this object offers the first direct observational evidence for a proposed rapid-growth mechanism that could resolve that mystery. The finding could reshape understanding of how the universe's largest structures formed in its earliest epochs.

What's next

Astronomers will likely examine whether the object and its brighter neighbor will eventually merge, and whether similar enshrouded black holes can be identified among the unexplained red dots already catalogued by the James Webb Space Telescope.

Key facts

• The object exists 660 million years after the Big Bang, during a period called cosmic dawn
• It produces approximately 100 billion times more energy than any known star
• Its apparent size is comparable to our entire solar system
• The source displays among the strongest hydrogen Balmer breaks ever recorded at any redshift
• Researchers model it as a supermassive black hole undergoing super-Eddington accretion inside a dense, dust-free gas envelope
• The study was published in the journal Nature

Bias & framing notes

The Nature paper provides precise technical detail and cautious scientific language, while The Guardian and CBS News both lean into the 'black hole star' framing for accessibility, with CBS emphasizing the mystery-solving angle. All three sources agree on the core facts; the popular outlets simplify the spectral evidence without misrepresenting the central finding.

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