For just one-tenth of a second in May 2019, the universe delivered a signal that did not fit the usual script. LIGO and Virgo ...
For years, astronomers treated merging black holes as if they all came from the ...
For years, astrophysicists have argued over a deceptively simple question: how do pairs of black holes find each other, spiral inward, and collide? A new analysis of more than 150 binary black hole ...