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Place

LIGO Hanford

A large, intricate metal structure stands prominently in a vast, flat desert landscape under a vibrant sunset sky, with smaller equipment visible around it.

LIGO's northern detector, built on a corner of the Hanford nuclear reservation in eastern Washington state. The site's flat, dry sagebrush plain offers a quieter seismic environment than Livingston. Hanford registered the first confirmed gravitational-wave signal seven milliseconds after Livingston did, in September 2015 — the time it took the wave to cross the continent.

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