LIGO detects gravitational waves from black hole merger 1.3 billion light-years away
This article reports on the January 2025 detection of gravitational waves from a black hole merger by LIGO, noting that the merger occurred 1.3 billion years ago in the constellation Leo. It frames black holes as extreme gravitational laboratories that scientists can now study through their event horizons.
Key quotes
A LONG TIME ago, in a galaxy far, far away—somewhere in the general direction of the constellation of Leo—two black holes crashed together and merged.
About 1.3bn years later, on January 14th 2025, a blip appeared in the detectors at the Laser Interferometer Gravitational-Wave Observatory (LIGO)
They make the universe's most extreme gravitational laboratories
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