The LIGO-Virgo-KAGRA collaboration has decided to mark the 10th anniversary of the discovery of gravitational waves with a very special gift. They have published data on the clearest signal they have yet detected in the observatory, which allowed them to confirm Stephen Hawking's area theorem of black holes. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

The event was seen on January 14, 2025, so it is known as GW250114, and it was not included in the recent release of data . It is similar to the first gravitational wave event ever observed, GW150914. Both involved collisions between black holes of 30 to 40 solar masses, and both happened around 1.3 billion light-years from Earth. The difference is 10 years of improvements in how we

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