Black Hole Pair 'Photobombs' Andromeda Galaxy HD

A source that light known as J0045+1 that was once thought to be part of the Andromeda Galaxy (M31) are actually a pair of black holes 1000X more distant. -- Full Story: https://www.space.com/39045-monster-black-holes-photobomb-galaxy-image.html Credit: NASA/CXC