Mars Warmth Proposed Through Rust-Released Hydrogen — SkimNews
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- Cin-Ty Lee proposed that water reacting with iron in Mars’s crust delivered a steady supply of atmospheric hydrogen for millions of years.
- Mars could average above freezing with even a few per cent hydrogen, depending on CO₂; H₂–CO₂ collisions make the molecule pairs absorb infrared wavelengths CO₂ alone does not block. Cin-Ty Lee believes enough CO₂ remains even now.
- Cin-Ty Lee’s 2024 calculations showed that a sufficiently thick Martian crust could melt ice in its upper few kilometres and create aquifers; the southern highlands’ crust is thought to extend as far as 80 kilometres below ground.
- The hydrothermal pump was expected to circulate aquifer water up and down through porous upper crust and shed heat until it ran out of both water and power as the crust’s radioactivity diminished.
- Ramses Ramirez noted that water releasing hydrogen from rocks was proposed more than a decade ago; Cin-Ty Lee says his work shows how thick crust makes the process nearly inevitable. Ramirez remains sceptical until he sees a full paper and says the explanation needs “extremely favourable circumstances.”
- Cin-Ty Lee’s crust-oxidation test looks for oxidation several kilometres below Mars’s surface, a finding he says would make this the only way the hydrogen could have been produced.
- Martian rust also supplies Cin-Ty Lee’s explanation for the planet’s red colour: wind erosion would grind exposed rusted rock into dust that coats everything.
Why it matters: Cin-Ty Lee’s model makes Martian climate history testable against the crust: rust extending several kilometres down would support the hydrogen source, while even a few per cent atmospheric hydrogen would put average temperatures above freezing under the stated CO₂ assumptions. Ramirez’s insistence on a full paper and “extremely favourable circumstances” leaves the proposed mechanism contested rather than settled.
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