/The 5 biggest physics questions that LIGOs reboot could soon answer

The 5 biggest physics questions that LIGOs reboot could soon answer

LIGO workers

An extensive upgrade has made LIGO more sensitive than ever

THE search for gravitational waves is back on, and this time we are expecting a deluge.

The Laser Interferometer Gravitational-Wave Observatory (LIGO) in the US made a huge splash in 2016, when it announced the detection of faint ripples in space-time produced by the collision of a pair of black holes. It has since spotted 10 more gravitational-wave events. Now, following upgrades, LIGO should see one a week when it starts up again on 1 April.

“We’re making the transition from having a slow drip of events to opening the faucet,” says Luis Lehner at the Perimeter …

Article amended on
29 March 2019

We clarified that looking for spin alignment is one way to find out what brings black holes together