Source:
https://www.livescience.com/space/black-holes/gravitational-wave-lab-ligo-roars-back-online-to-detect-the-oldest-black-hole-collisions-ever-seenGravitational wave lab LIGO roars back online to detect the oldest black hole collisions ever seenPublished May 26, 2023
"LIGO has been upgraded to observe gigantic black hole mergers 5 billion light-years away.
On May 24 2024, scientists at the Laser Interferometer Gravitational-Wave Observatory (LIGO) began an 18-month campaign to detect the most distant collisions between black holes and neutron stars ever observed."
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An ullustration of two supermassive black holes about to collide as gravitational waves spill into space. (Image credit: Getty):