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For the first time, physicists have calculated exactly what kind of singularity lies at the center of a realistic black hole.
Lurking behind Einstein’s theory of gravity and our modern understanding of particle physics is the deceptively simple idea of symmetry. But physicists are beginning to question whether focusing on symmetry is still as productive as it once was.
Opinions differ about what recent measurements of a sound-trapping fluid reveal about light-trapping black holes.
The same codes needed to thwart errors in quantum computers may also give the fabric of space-time its intrinsic robustness.
In the latest campaign to reconcile Einstein’s theory of gravity with quantum mechanics, many physicists are studying how a higher dimensional space that includes gravity arises like a hologram from a lower dimensional particle theory.
A controversial new paper argues that universes with dark energy profiles like ours do not exist in the “landscape” of universes allowed by string theory.
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