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LIGO Continues Making Waves

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Scientists are using photonics to detect gravitational waves, the long-predicted phenomena that directly confirm Einstein’s general theory of relativity.

VALERIE C. COFFEY, SCIENCE WRITER

It’s an incredible story: Building the Laser Interferometer Gravitational-Wave Observatory (LIGO) took a collaboration of over 1000 people, some $500 million in funding from the National Science Foundation over three decades, and a lot of patience. But the vision paid off with observational evidence of one of the greatest mysteries in physics — the existence of gravitational waves. In 2001, the first two LIGO facilities came online in the U.S. — one in Livingston, La., and the other in Hanford, Wash. — separated by 3000 km. The twin observatories are composed of...Read full article

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