LIGO Scientific Collaboration

The LIGO Scientific Collaboration (LSC) is a group of scientists focused on the direct detection of gravitational waves, using them to explore the fundamental physics of gravity, and developing the emerging field of gravitational wave science as a tool of astronomical discovery.

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LIGO News & Press Releases

  • A visualization of a pair of merging black holes by Aurore Simonnet with the text "Celebrating the End of O4" overlaid beside the unofficial LIGO-Virgo-KAGRA logo.

    LIGO-Virgo-KAGRA Collaboration successfully wraps up its fourth Observing Run

    Today, the international LIGO-Virgo-KAGRA Collaboration celebrates the successful completion of its fourth observing run (O4), marking another major step forward in the exploration of the gravitational wave universe. The run, which began May 24, 2023 and continued through November 18, 2025, relied on coordinated observations and analyses by teams across the world. During O4, the… Read More

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Gravitational Waves Explained

LIGO and its partners use spacetime ripples to observe distant collisions involving black holes and neutron stars.

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Science Summaries

Read plain-English summaries of our Collaboration publications.

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LIGO Magazine

Get an insider’s view into the workings of the LIGO Scientific Collaboration.

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