Cosmic Mystery Solved: Astronomers Discover “Black Hole Star” at Universe’s Dawn—A Revolutionary New Class of Objects Emerges

Astronomers have discovered a “black hole star,” an extremely bright red spot in the early universe that appears to be an entirely new type of astrophysical object, resembling an enormous star yet producing energy closer to what a black hole might generate. The discovery, reported in the journal Nature, marks a breakthrough in understanding one of astronomy’s most perplexing cosmic mysteries involving mysterious “little red dots” observed throughout the early universe.

The object, dubbed MoM-BH*-1, was discovered using NASA’s James Webb Space Telescope during the Mirage or Miracle survey, which focused on locating some of the earliest galaxies in the universe. The black hole star formed approximately 660 million years after the Big Bang, existing at a time when the universe was only in its infancy.

The sheer energy output defies conventional stellar physics. The object puts out 100 billion times more energy than any known star can physically produce, making its power closer to levels associated with black holes. Yet its appearance resembles a gigantic star spanning approximately the size of Earth’s solar system, creating an unprecedented cosmic paradox that has captivated the astronomical community.

The researchers estimate that MoM-BH*-1 contains a black hole around 100,000 times the mass of the sun, surrounded by an enormous, extremely dense cloud of hydrogen gas stretching roughly across the size of the solar system. From the outside, this thick gas envelope behaves somewhat like the atmosphere of an enormous star, but unlike an ordinary star, its tremendous energy production stems from a black hole constantly devouring matter rather than nuclear fusion.

The discovery was led by MIT astrophysicist Rohan Naidu and colleagues who were intentionally hunting for the earliest galaxies when they spotted the unusually bright red object. “What exactly these objects are has been one of the most debated topics of the JWST era,” Naidu stated regarding the black hole star phenomenon.

The initial analysis process revealed spectroscopic signatures unlike anything previously catalogued. The source was extremely bright at some wavelengths, yet its light vanished entirely below certain wavelengths, displaying the strongest ‘Balmer break’ ever measured at any redshift, a feature normally linked to dense gas absorption. This sudden drop in light is a sharp drop in brightness at wavelengths normally associated with dense gas in the outer layers of stars, but ordinary starlight simply can’t produce a break this severe.

The discovery may illuminate a longstanding cosmic puzzle. Since JWST began exploring the distant universe, astronomers have repeatedly found mysterious objects known as “little red dots,” common when the universe was young but appearing to have largely vanished later in cosmic history. The newly discovered object may offer an important clue regarding what these red dots actually represent, with researchers suspecting that many of these objects are also black hole stars embedded within early galaxies.

The theoretical foundation for black hole stars extends back decades. While the idea of “black hole stars” has gathered support elsewhere, a 2024 study helped establish little red dots as a distinct JWST population and interpreted their broad hydrogen lines as evidence for rapidly accreting black holes. This discovery provides observational validation for theoretical predictions initially conceived nearly two decades ago.

The object’s existence poses profound implications for cosmic evolution. Astronomers have never lacked imagination regarding how supermassive black holes in the early universe grew so massive so quickly, with something spectacular apparently having occurred in the early universe that JWST can now directly observe. Black hole stars may represent intermediate growth stages through which supermassive black holes evolved during the universe’s earliest epochs.

As research progresses, additional observations will clarify whether MoM-BH*-1 represents a singular anomaly or the first documented member of an entire class of cosmic objects revolutionizing our understanding of early universe physics and supermassive black hole formation mechanisms.