LIGO and Virgo’s gravitational wave tally more than quadrupled in six months
Scientists have now collected 50 sets of the spacetime tremors
![black hole merger illustrated](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/10/102820_ec_gravitational-wave_feat.jpg?fit=1028%2C579&ssl=1)
Scientists have now detected 50 sets of gravitational waves, many produced when two black holes (illustrated) spiral around one another before colliding and merging into one.
© N. Fischer, S. Ossokine, H. Pfeiffer, A. Buonanno/Max Planck Institute for Gravitational Physics, Simulating eXtreme Spacetimes (SXS) Collaboration