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Published — 3 September 2026 ⏭ Sabine Hossenfelder

This New Result Changes What We Know About The Butterfly Effect

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The butterfly effect is much stranger than most people think, and the famous line about a butterfly in Brazil isn't what Lorenz actually meant. A group of researchers has now worked out that quantum physics puts a hard wall on weather prediction, at 129 days. Not difficult after that. Impossible. And this has implications far beyond the weather forecast because chaos enters in everything from nuclear fusion to robotics to black hole physics. Let's take a look.

Paper: https://doi.org/10.1007/s00376-026-5621-8

#science #sciencenews #physics #quantumphysics #butterflyeffect #chaostheory

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