A team of astronomers has proposed a single origin theory for the enigmatic young, massive stars circling Sagittarius A*, the supermassive black hole at the center of the Milky Way. The discovery could resolve a decades-old mystery about how such stars survive in extreme gravitational environments.
The stars, located within a few light-years of Sgr A*, have defied explanation because their orbits appear too close to the black hole for them to have formed there. Previously, competing theories suggested they were captured from elsewhere or formed from gas clouds, but none accounted for all observed properties.
According to the new hypothesis, these massive stars may have migrated inward from a much larger stellar nursery farther out in the galactic center. The team's simulations show that a cluster of young stars could have spiraled toward Sgr A* over millions of years, explaining both their ages and unusual orbital alignments.
The finding challenges existing models of star formation near black holes and suggests that such migration may be more common than thought. If confirmed, it could reshape our understanding of how galaxies evolve and how supermassive black holes interact with their surroundings.
However, some researchers caution that the model relies on assumptions about the cluster's initial density and may not apply to all stars currently observed. Further observations with next-generation telescopes will be needed to test the theory fully.