Scientists spot a smallish black hole smashup

Black hole merger
An artist’s conception shows two black holes in the process of merging. (LIGO / Caltech / MIT Illustration)

It took months to figure it out, but the scientists in charge of the Laser Interferometer Gravitational-wave Observatory, or LIGO, have confirmed their observations of the most lightweight black hole merger yet.

The latest detection provides further confirmation of Einstein’s general theory of relativity — and will help physicists hone their routine for combining observations from different types of scientific instruments, an approach known as “multi-messenger astronomy.”

Scientists say the spike in gravitational waves known as GW170608, detected on June 8, was set off by the smashup of two black holes weighing seven and 12 times as much as our sun.

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By Alan Boyle

Mastermind of Cosmic Log, contributor to GeekWire and Universe Today, author of "The Case for Pluto: How a Little Planet Made a Big Difference," past president of the Council for the Advancement of Science Writing.

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