The largest known black hole jets, 23 million light years across, have been discovered in the distant universe. This pair of particle beams launched by a supermassive black hole is over a hundred times larger than our galaxy,

Astronomers have discovered the largest known black hole jets, stretching an astonishing 23 million light-years. To put it in perspective, that’s the length of 140 Milky Way galaxies aligned end-to-end.