A: Because, like the hugely expensive experimental search for the Higgs Boson, the big bet on gravitational waves is finally paying off. Today, as the discovery of a second gravitational wave is announced, the National Post’s Joseph Brean looks to the future of space observation. Then, they can match the gravitational wave with other signals in the electromagnetic spectrum, such as gamma rays, X-rays, even visible light. This was the origin of the gravitational wave idea. (Just enough time for another black hole merger somewhere in the cosmos) aas.org/aas-briefing-w… —(@LIGO) June 15, 2016Answer: LIGO, a gravitational wave detector with twin observatories in Louisiana and Washington state, observed its second confirmed event, a signal lasting about a second.

Source: National Post June 15, 2016 17:15 UTC