Venkatesh Rao@vgr๐ง๐ฅ๐ค๐ฑ๐ค๐Quote TweetCorey S. Powell@coreyspowellยทJun 24, 2016Upgraded gravitational-wave detectors will soon pick up 3 black hole collisions every day! http://bit.ly/28YpKJu5:22 AM ยท Jun 26, 2016