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Physics

AI could solve baffling three-body problem that stumped Isaac Newton

By Leah Crane

29 October 2019

Exoplanets

Three’s a crowd

Pitris/Getty

A notorious maths problem first posed by Isaac Newton may be getting closer to a solution thanks to artificial intelligence. The three-body problem – the question of how three objects orbit one another under their own gravity – has baffled physicists and mathematicians for more than 300 years, but it turns out a neural network can find solutions remarkably quickly.

The three-body problem is difficult because it is a chaotic system, meaning it requires an extremely precise understanding of where the three objects start. For these systems, the “butterfly effect” comes into play – even a tiny error could result in an entirely…

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