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Most plans that use water to make fuel on Mars don't use liquid hydrogen at all. The two most well known plans are the BFR/SSH and Zubrin's Mars Direct, both of
by arijun 8y ago
Most plans that use water to make fuel on Mars don't use liquid hydrogen at all. The two most well known plans are the BFR/SSH and Zubrin's Mars Direct, both of which use liquid methane. You still have to cool it, but not nearly as much, and it doesn't come with the other problems of hydrogen like embrittlement.
- trhway 8y agoMethane can also be used to make food https://www.newscientist.com/article/2112298-food-made-from-natural-gas-will-soon-feed-farm-animals-and-us/ https://www.newscientist.com/article/2112298-food-made-from-... Thus no need to grow potatoes :)