One of the things astronomers find when they look around at galaxies is a correlation between a galaxy’s mass and the mass of its supermassive black hole. Contrary to popular belief, these SMBH don’t anchor their galaxies; they make up only a small portion of a galaxy’s mass. In local galaxies, the ratio of SMBH mass to galaxy mass is about 0.1%–0.5%.
The JWST finds more overmassive black holes. This time in dwarf galaxies
