New Gravitational Wave Discovery!

Scientists have JUST published this new observation. On January 4th, 2017 they detected the merger of two black holes 3 billion light-years away. This marks the furthest detection they've been able to make and increases confidence that these events will be seen with increasing frequency as the LIGO interferometers become more sensitive to low amplitude gravitational waves (as sources of noise are eliminated).

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+4 1. ringmaster commented 7 years ago

How we measure gravitational waves? We send light back and forth in some empty tubes. If the waves are out of sync with each other, the reason may be that the tube has been stretched by the change of space created by the gravitational wave. But that's the very short version of it.

Those especially interested may watch this lengthy talk: https://www.youtube.com/watch?v=xj6vV3T4ok8