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Two ways of approximating the ultra-complicated math that governs quark particles have recently come into conflict, leaving physicists unsure what their decades-old theory predicts.
Physicists have proposed extra cosmic ingredients that could explain the faster-than-expected expansion of space.
The “pinball” model of a slipping fault line borrows from the mathematics of avalanches.
The laws of physics imply that the passage of time is an illusion. To avoid this conclusion, we might have to rethink the reality of infinitely precise numbers.
Sometimes a mirror that reflects 99.9999% of light isn’t good enough.