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LIGO
Laser Interferometer
Gravitational-Wave Observatory
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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.

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    What are gravitational waves? Why are we looking for them? How does it affect us? Virtual Tour
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O3a Bulk Strain Data Release

News Release • April 17, 2021

LIGO/Virgo release latest data to the public

Headlines

LIGO-Virgo-KAGRA Webinar to Discuss New Results on the Gravitational-wave Background

News Release • February 2, 2021

LIGO and Virgo to Receive IEEE Milestone Plaques

News Release • January 22, 2021

Winner of the 2020 Award for Excellence in Detector Characterization and Calibration Announced

News Release • November 23, 2020

LIGO, Virgo and Kagra Observing Run Plans

News Release • November 17, 2020

3rd LIGO/Virgo Webinar on the Latest Results from the First-half of the 3rd Observing Run

News Release • November 16, 2020

Featured Press Releases
  • GW1909814: Mystery object in mass gap
  • 1st BNS GW observation, EM counterparts
  • 2017 Nobel Prize
  • GW150914: 1st direct GW observation
  • GW150914 detection portal
Researchers
  • LIGO Scientific 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
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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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