Astronomers have discovered a rare cosmic entity known as a black hole “star” dubbed MoM-BH*-1, providing a potential explanation for how supermassive black holes expanded rapidly in the early universe, according to findings published in Nature. The object existed 660 million years after the Big Bang, shining with intense red light and spanning dimensions comparable to the entire solar system.
Discovery of MoM-BH*-1 in the Early Universe
The mysterious object MoM-BH*-1 is located at a distance where its light took over 13 billion years to reach Earth. According to lead study author Rohan Naidu, writing in The Guardian, the light profile is uniquely dramatic. The illumination is almost exclusively red and abruptly drops off under a specific wavelength, matching no other known class of cosmic objects.
While the body resembles a giant star in its energy output—radiating roughly 100billionkrát more energy than a normal star—its central engine is a black hole. Researchers explain that a massive cocoon of extremely dense hydrogen surrounds the central black hole. This dense envelope absorbs and re-emits the energy generated near the black hole, giving the outer structure star-like traits even though it spans dozens of astronomical units.
Solving the Mystery of Little Red Dots
The discovery of MoM-BH*-1 helps clarify a persistent puzzle brought to light by the James Webb Space Telescope. These objects appear roughly 600 million years after the Big Bang before declining in number a billion years later.
Previously, scientists debated whether these LRDs were young galaxies, dusty active black holes, or other phenomena. The newly modeled cocoon around MoM-BH*-1 suggests that many of these red dots are actually young black holes hidden inside dense gas clouds. Furthermore, models indicate that extreme gas density alters the color of the light rather than cosmic dust, providing a fresh framework for interpreting Webb telescope data.
Fueling the Rapid Growth of Supermassive Black Holes
Astrophysicists have long struggled to explain how black holes weighing millions or billions of solar masses could emerge so quickly in the early universe. Because some of these objects existed before the universe was a billion years old, standard growth models leave little time for accumulation.
The dense gas envelope surrounding MoM-BH*-1 may represent the exact environment where a young black hole rapidly gathers surrounding matter. While the study authors emphasize that their current model remains simplified and exact mass estimates stay uncertain, the discovery offers a concrete glimpse into the mechanisms driving rapid cosmic expansion. “Something spectacular had to happen in the early universe,” Naidu told Phys, emphasizing that the Webb telescope finally allows direct study of this ancient epoch.
Did you know? The James Webb Space Telescope relies on a 6.5-meter primary mirror built from 18 gold-plated hexagonal segments to capture infrared light stretching back over billions of years.
Frequently Asked Questions
What is a black hole star?
A black hole star, such as MoM-BH*-1, is not a hybrid of a star and a black hole. It is a massive black hole surrounded by a dense gas cocoon that absorbs and re-emits energy, making the overall object glow with star-like properties and span the size of a solar system.
How does MoM-BH*-1 relate to little red dots?
Little red dots are compact, bright objects discovered by the James Webb Space Telescope in the early universe. Researchers propose that many of these red dots are young black holes enveloped in dense gas similar to MoM-BH*-1.
Why is this discovery important for astronomy?
It provides a working model for how supermassive black holes could accumulate mass quickly enough to reach enormous sizes within the first billion years after the Big Bang.
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