Oxford University Press's
Academic Insights for the Thinking World
Since their groundbreaking discovery of gravitational waves from a pair of in-spiralling black holes back in
2015, the LIGO-Virgo-KAGRA collaboration has detected nearly 70 candidates of such events, 50 being
confirmed and published until now.
The existence of gravitational waves, or ripples in the space-time, is no more just a speculation but a firm truth, after the recent direct detection of such waves from at least two pairs of merging black holes by the LIGO gravitational-wave detector. In such a binary system, two black holes orbit each other at a close separation, nearly at the speed of light, whirling the spacetime in their neighbourhood.