Background hum of space may reveal hidden black holes: Study
Two US researchers who were part of the first-ever gravitational-wave discovery in 2015, have said that over 100,000 such events occur every year, too faint to be unambiguously detected. The researchers will use a $4-million supercomputer to search for these faint black hole signals called the "gravitational-wave background" in data collected by LIGO, which has made six detections so far.