RT @AstronomyNow: Galactic merger exposes supermassive black hole 2 billion light-years away astronomynow.com/2016/11/04/gal… https://t.co/nSHHiqwSn8
RT @AstronomyNow: Galactic merger exposes supermassive black hole 2 billion light-years away astronomynow.com/2016/11/04/gal… https://t.co/nSHHiqwSn8