How One Line in the Oldest Math Text Hinted at Hidden Universes

Published 2023-10-21
Discover strange new universes that turn up at the core of Einstein’s General Relativity. Head to to start your free 30-day trial, and the first 200 people get 20% off an annual premium subscription.

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If you’re looking for a molecular modeling kit, try Snatoms – a kit I invented where the atoms snap together magnetically –

A massive thank you to Prof. Alex Kontorovich for all his help with this video.

A huge thank you to Prof. Geraint Lewis and Dr. Ashmeet Singh for helping us understand the applications of Non-Euclidean geometry in astronomy/cosmology.

Lastly, a big thank you to Dr. Henry Segerman and Dr. Rémi Coulon for helping us visualize what it’s like to be inside hyperbolic space and helping us understand hyperbolic geometry.

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Written by Casper Mebius, Petr Lebedev, Emily Zhang, Derek Muller, and Alex Kontorovich
Edited by Jack Saxon
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