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What We Saw When Two Black Holes Collided
Posted
August 25, 2025
Views
41,761
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1,456
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Engagement
3.63%
August 25, 2025
41,761
1,456
59
3.63%
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7:51Now PlayingEinstein’s general relativity recasts gravity as the geometry of spacetime. When massive objects accelerate (e.g., black holes, neutron stars), they send out gravitational waves—ripples that LIGO measures. By reading a wave’s frequency (“wavelength”) and amplitude as it washes over Earth, we can infer the source (e.g., two ~30-solar-mass black holes colliding at ~half the speed of light). The “sound” you hear in videos is sonification—a data mapping, not real sound in space.
From 'When Black Holes Collide, with Nergis Mavalvala'
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