The biggest black hole yet found, 17 billion times the mass of our sun.
The unusual black hole makes up 14 percent of its galaxy’s mass, rather than the usual 0.1 percent. … NGC 1277 [the galaxy] lies 220 million light-years away in the constellation Perseus. The galaxy is only ten percent the size and mass of our own Milky Way. Despite NGC 1277′s diminutive size, the black hole at its heart is more than 11 times as wide as Neptune’s orbit around the Sun.
Based on these measurements, it appears that this black hole is literally eating this galaxy whole.