A special week for #blackholes rounds off with a 2nd new @LIGO @ego_virgo candidate event, #S190412m which looks like a binary black hole merger, hot on the heels of Monday's #S190408an and Wednesday's amazing @ehtelescope #BlackHolePicture. #O3ishere https://t.co/jIiGKHX4eN pic.twitter.com/ezF53RA65F

— LIGO (@LIGO) April 12, 2019