Gravitational Astronomy Proves its Maturity

With the sighting of a merger between a black hole and a neutron star

The Economist
Aug 23 · 11 min read
Image: Dana Berry/NASA

On August 14th, just after 9pm Universal Time, a ripple of gravitational waves reached Earth. Until a few years ago no one would have noticed such an event. But 2015 saw the reopening, after an upgrade, of the Laser Interferometer Gravitational-wave Observatory (LIGO), a…

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