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NASA Astronaut Tests Chain Fountain Theory in Space

10/14/2025

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Summary

Story summary

Don Pettit, NASA astronaut, and Steve Mould, YouTuber, tested the chain fountain in microgravity on the International Space Station.
Mould's theory says a chain can flow through its shape without gravity, which Pettit demonstrated with a rectangular arrangement.
They struggled to keep the chain in place in microgravity, yet it followed its path, supporting Mould's theory.
The informal test yielded insights into chain behavior in space, and Mould called for more experiments.

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Story summary

Don Pettit, NASA astronaut, and Steve Mould, YouTuber, tested the chain fountain in microgravity on the International Space Station.
Mould's theory says a chain can flow through its shape without gravity, which Pettit demonstrated with a rectangular arrangement.
They struggled to keep the chain in place in microgravity, yet it followed its path, supporting Mould's theory.
The informal test yielded insights into chain behavior in space, and Mould called for more experiments.