UNIVERSITY PARK, Pa., July 7 -- Pennsylvania State University issued the following news release:

UNIVERSITY PARK, Pa. - When two black holes orbit each other, they will eventually spiral inward and collide in one of the most violent phenomena in the universe. The event is so energetic that it significantly distorts the universe around it. It emits gravitational waves - ripples in the fabric of spacetime - that are strong enough to be detected with precision instruments on Earth even when they originate billions of light-years away. These gravitational waves carry information about the event that physicists use to predict the size of the merger's resulting new larger black hole - referred to as a remnant. But accurate predictions involve co...