" THE BLACK-HOLE MERGER DETECTED BY ITS GRAVITATIONAL WAVES ON 14 SEPTEMBER 2015 PUMPED OUT FIFTY TIMES MORE POWER THAN ALL THE STARS IN THE UNIVERSE COMBINED ‘If you ask me whether there are gravitational waves or not, I must answer that I do not know. But it is a highly interesting problem.’ Albert Einstein, 1936 ‘Ladies and gentlemen, we did it. We have detected gravitational waves.’ David Reitze, 11 February 2016 "

― Marcus Chown , Infinity in the Palm of Your Hand: Fifty Wonders That Reveal an Extraordinary Universe