What 50 gravitational-wave events reveal about the Universe

Astronomers observed 39 cosmic events that released gravitational waves over a 6-month period in 2019 — a rate of more than one per week. The bounty, described in a series of papers published on 28 October, demonstrates how observatories that detect these ripples — usually created by the merging of two black holes — have dramatically increased their sensitivity since the first identification was made in 2015.
Read more: https://www.nature.com/articles/d41586-020-03047-0?source=Snapzu