Goodbye Rai Weiss

We are deeply saddened to hear about the passing of Rainer Weiss, one of the fathers of gravitational wave research, founder of the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Nobel Prize laureate in physics for the detection of gravitational waves....

GWTC-4.0: Updated Gravitational Wave Catalog Released

August 26th 2025 marks an important date for the international LIGO, Virgo, and KAGRA (LVK) gravitational-wave network. The collaborations are releasing the interferometric strain data from the first part of the fourth observing run (O4a) that took place from May...

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