Scientists detect shock waves from colliding galaxies – BBC News
By Pallab Ghosh Science correspondent 37 minutes ago image source, EPTA/Steliios Thoukidides photo caption, Artist’s impression: The supermassive black holes at the center of each galaxy orbit each other, sending gravitational shock waves throughout the Universe Scientists have captured shock waves from the orbit of supermassive black holes at the center of distant galaxies as … Read more