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Phys.org

Top News / Phys.org

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Do black holes have hidden hair? Scientists find a new way to check

When two black holes crash together and merge, the newly formed black hole rings like a bell, sending out gravitational waves with specific frequencies that fade over time. This brief, fading pattern of waves is called ringdown, and it may hold secrets about what is hiding around black holes.

7 Sep 2026 6:30 pm