Honored to have met this great man personally. C.V. Vishveshwara , Ph.D. ’68, physics, a theoretical physicist and director emeritus of the Jawaharlal Nehru Planetarium in Bangalore, India, who is best known for proving that non-rotating black holes are stable, first predicted the ringdown phase in the early 1970s. “Gravitational waves and black holes both belonged to the realm of mythology,” Vishveshwara told the journal Nature in March 2016. “At that time, I had not imagined that [the ringdown phase] would ever be verified.” https://cmns.umd.edu/news-events/features/3640