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Watch: Chirp if you love gravitational waves—these scientists did

Gravitational waves, whose detection for the first time was announced yesterday, are ripples in spacetime, but their frequencies in some cases can be represented as audible sounds. A “chirp” was heard with the first wave detected, from two merging black holes, the scientists from the Laser Interferometer Gravitational-Wave Observatory (LIGO) facility that spotted the wave reported at the press conference Thursday. And that has inspired a #ChirpforLIGO hashtag where scientists are tweeting their own versions, The New York Times reports. The video above, produced before the announcement, collects many scientists’ chirps, including one in a clip from a past video by Carl Sagan.

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