He described the concept as a “stainless-steel sandwich” that can “bleed water…fuel” through tiny holes on its surface to keep it cool as it enters the Martian atmosphere at breakneck speeds.
Not sure, but I don’t think there are a lot of people who want to travel to Mars inside a sandwich…
www.inverse.com/article/52605-starship-spacex-elon-musk-stainless-steel
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