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Q&A How do you get steel outside Earth?

I'm looking for a more economical and efficient method of making steel for my project Death Star Unlimited, a mega infrastructure orbiting Mars with a mass of 500,000,000 metric ton give or take 1%...

2 answers  ·  posted 5y ago by user6760‭  ·  last activity 5y ago by user6760‭

Question space construction solar-system space-constructs mining