Astronomers have seen the largest jets ever found erupting from a black hole. The giant jet system Porphyrion is 23 million light-years long, equal to 140 side-by-side Milky Way galaxies.

Black hole blasts largest jet ever seen at 23 million light-years long

Source: space
Source Link: https://www.space.com/black-hole-jets-longest-23-million-light-years