Black Hole Jets May Decide the Fate of Entire Galaxies

A black hole’s jets have a halo effect

Nature, Published online: 01 October 2026; doi:10.1038/d41586-026-03036-9Observations confirm jets’ expected effect on the gas cloud that surrounds a galaxy.

Black hole jets may decide the fate of entire galaxies

Powerful jets from supermassive black holes can disturb star-forming gas far beyond a galaxy’s visible edge, leaving a glowing trail hundreds of thousands of light-years long. By keeping this gas hot and preventing it from falling inward, the jets may help determine whether a galaxy keeps forming stars or becomes quiet.

Black hole jets reach far beyond galaxies' visible edges, potentially deciding their fate

Galaxies are enormous and hold hundreds of billions of stars. These stars form from cold, dense gas. Every large galaxy, including the Milky Way, is wrapped in a huge envelope of gas called the circumgalactic medium, or CGM. This reservoir of raw material stretches 10–20 times the size of the visible portion of the galaxy.

Black Hole Jets and the Fate of Galaxies

9 Source: www.sciencedaily.com

Supermassive black holes leave a glowing trail far beyond their host galaxies

Radio jets from supermassive black holes make cool halo gas glow along their paths hundreds of thousands of light-years from galaxies.