super-massive black hole

Astronomers Spot Black Hole So big, It Defies Current Theories Of Galaxy Evolution

July 10, 2015 | by Jonathan O'Callaghan

photo credit: An illustrated view of a black hole that outgrew its galaxy via Michael S. Helfenbein/Yale University

Share on redditShare on google_plusone_shareMore Sharing ServiAlmost all galaxies are thought to have a supermassive black hole at their cores that make up at most 0.5% of the galaxy’s total mass.

Almost all galaxies are thought to have a supermassive black hole at their cores that make up at most 0.5% of the galaxy’s total mass.

So the discovery of a galaxy called CID-947 with a black hole that makes up 10 of its mass has left scientists dumbfounded, possibly overturning current theories of how galaxies evolve.