UNC Astronomers Spot Rare Universe Black Hole Event

A team of astronomers at the University of North Carolina at Chapel Hill has observed an extremely rare "wandering" black hole located tens of thousands of light-years from the center of its galaxy. This finding could reshape scientists' understanding of how massive black holes move through the universe after galaxies collide.

The discovery centers on a powerful cosmic flare known as a tidal disruption event, or TDE, which occurs when a star wanders too close to a massive black hole and is violently torn apart by gravity. Tidal disruption events anywhere in a galaxy are rare, occurring on average once every 100,000 years. While astronomers have identified more than a hundred of these events over the past decade, nearly all have been found at the centers of galaxies, where scientists expect the largest black holes to reside. But this newly discovered event, dubbed TDE 2025abcr, was different.