Preliminary skymap for #S190510g pinpoints our candidate event to about 3500 square degrees, or the area of more than 13000 full moons: that's a lot of sky to search!...And most likely source distance is about 270 Mpc, or nearly 900 million light years... 2/4 pic.twitter.com/CC3iMo3mXp

— LIGO (@LIGO) May 10, 2019