SMRTR Science & EngineeringSep 11, 2025Ars Technica

New black hole merger bolsters Hawking area theorem

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Analysis of a 2025 LIGO black hole merger signal strongly supported Hawking's area theorem, showing two black holes with 240,000 km² combined surface area merged into one with 400,000 km², confirming that black hole surface area only increases or remains stable.

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