The merger of two black holes, estimated to have occurred about 7 billion years ago, is the largest observed in gravitational waves, researchers say.
Read more here:: Scientists detect massive gravitational wave from merger of 2 black holes
The merger of two black holes, estimated to have occurred about 7 billion years ago, is the largest observed in gravitational waves, researchers say.
Read more here:: Scientists detect massive gravitational wave from merger of 2 black holes