Jonathan O’Callaghan on X: “My debut article for Popular Mechanics! It's all about time travel par…”

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Jonathan O’Callaghan on X: “My debut article for Popular Mechanics! It's all about time travel par…” | PeekX

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Jonathan O’Callaghan

@Astro_Jonny

My debut article for Popular Mechanics!

It's all about time travel paradoxes, and the actual experiments and research that have investigated them. Come for the closed timelike curves, stay for the retrocausality.

Enjoy 🕙

popularmechanics.com/science/a73835…

Sep 24, 2026, 2:45 AM UTC

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