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The “gravitational memory effect” predicts that a passing gravitational wave should forever alter the structure of space-time. Physicists have linked the phenomenon to fundamental cosmic symmetries and a potential solution to the black hole information paradox.
The five-decade-old paradox — long thought key to linking quantum theory with Einstein’s theory of gravity — is falling to a new generation of thinkers. Netta Engelhardt is leading the way.
A new study shows that extreme black holes could break the famous “no-hair” theorem, and in a way that we could detect.
A proposal for building wormhole-connected black holes offers a way to probe the paradoxes of quantum information.
Calculations involving a higher dimension are guiding physicists toward a misstep in Stephen Hawking’s legendary black hole analysis.
Opinions differ about what recent measurements of a sound-trapping fluid reveal about light-trapping black holes.
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