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News Physics

Second gravitational wave signal detected

Smaller waves from another black hole merger found

two spiraling black holes

RIPPLE SIGHTING  The cosmic dance of two black holes warped spacetime as the pair spiraled inward and merged, creating gravitational waves (illustrated). LIGO detected these ripples, produced by black holes eight and 14 times the mass of the sun, on December 26, 2015. 

T. Pyle/LIGO

By Emily Conover

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