The brightest orb in the center of this photograph captured by the Hubble Space Telescope is a galaxy some 300 million light-years away called NGC 4889.

At its core rests a supermassive black hole that is about 21 billion times the size of the sun, according to NASA and the European Space Agency.

Though you cannot see it in this image because black holes swallow light, NASA said it was one of the largest star devourers ever observed. It dwarfs the black hole that twists at the center of our Milky Way, which researchers estimate is only four million times the size of the sun. The monster once feasted upon many of its host galaxy’s stars, gas and dust, but is no longer active.