This pair of merging black holes is the closest to Earth we've ever found - Space.com

This pair of merging black holes is the closest to Earth we've ever found  Space.comAstronomers Spot Two Supermassive Black Holes on a Collision Course  GizmodoVery Large Telescope uncovers closest pair of supermassive black holes yet  Phys.OrgJourney to the closest pair of supermassive black holes  European Southern Observatory (ESO)Closest Supermassive Black Hole Pair to Earth Discovered, On Verge of Collision  NewsweekView Full Coverage on Goo