Nearby quasar may be home to dynamic duo
Twin black holes could provide insight into galaxy formation
![pair of supermassive black holes](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/08/083115_cc_doubleblackhole_free.jpg?fit=860%2C460&ssl=1)
BOSOM BUDDIES A pair of supermassive black holes might live in the heart of the galaxy Markarian 231, shown in this Hubble Space Telescope image.
A. Evans (Univ. of Virginia, Charlottesville; NRAO; Stony Brook Univ.), the Hubble Heritage Team/STScI/AURA, Hubble Collaboration/ESA and NASA