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LIGO
Laser Interferometer
Gravitational-Wave Observatory
Supported by the National Science Foundation
Operated by Caltech and MIT
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    LIGO-Virgo-KAGRA Finds Elusive Mergers of Black Holes with Neutron Stars

    News Release • June 29, 2021

    LVK scientists capture two NSBH merger events 10 days apart in January 2020.

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    A “bang” in LIGO and Virgo detectors signals most massive gravitational-wave source yet

    News Release • September 2, 2020

    GW190521, a binary black hole merger likely produced gravitational waves equal to the energy of eight suns.

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    LIGO-Virgo Finds Mystery Object in "Mass Gap"

    News Release • June 23, 2020

    LIGO and Virgo report the observation of a merger involving a black hole of 23 solar masses and a compact object of 2.6 solar masses, detected during LIGO’s and Virgo’s 3rd observing run on August 14, 2019. The merger resulted in a final black hole of about 25 solar masses, located about 800 million light-years from Earth.

  • What_slide
    What are gravitational waves? Why are we looking for them? LIGO's Impact Public Alerts
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News
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Can Cosmic Collisions Be Predicted Before They Happen?

News Release • March 10, 2023

LIGO researchers are developing early-warning software to nab neutron-star mergers more quickly

Headlines

Latest Update on Start of Next Observing Run (O4)

News Release • January 21, 2023

Winner of the 2022 Award for Excellence in Detector Characterization and Calibration Announced

News Release • November 21, 2022

LIGO Exploration Center opens at Hanford, Washington

News Release • June 8, 2022

LIGO-Virgo-KAGRA Webinar to Discuss Observational Results

News Release • March 21, 2022

LIGO Laboratory's Statement on the War in Ukraine

News Release • March 14, 2022

Featured Press Releases
  • GW190814; Mystery Object in the Mass Gap
  • GW200105 and GW200115: NSBH binaries
  • 1st BNS GW observation, EM counterparts2017
  • Nobel Prize
  • GW150914 detection portal
Researchers
  • LIGO Scientific Collaboration
  • Citing the LIGO–Virgo–KAGRA Collaboration
  • LIGO Open Science Center
  • Observatory Status
Quick links
  • What are gravitational waves?
  • Why are we looking for them?
  • LIGO's impact
  • Public alerts of candidate events
  • Current and future observing plans
Nobel Prize

 

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LIGO Laboratory
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The LIGO Laboratory is supported by the National Science Foundation and operated jointly by Caltech and MIT. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.

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