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A comment on Relativity Space (YC W16) Gets a Launch Site at Cape Canaveral.

Re:Relativity Space (YC W16) Gets a Launch Site at Cape Can... by tintor on Friday January 18, 2019 @01:25AM (#18937427)
"Relativity will try to realize its more ambitious long-term goal: taking this manufacturing process to the Red Planet and building a rocket using 3D printers on Mars."

Why not aim to build a fuel factory first, to refuel spacecraft for return trips?

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Re:Relativity Space (YC W16) Gets a Launch Site at Cape Can... by cbanek on Friday January 18, 2019 @02:53AM (#18937710)
Maybe because a fuel factory wouldn't be immediately profitable on Earth like building rockets? On Earth there are plenty of cheaper ways to make fuel.

I do agree though that fuel is the most important thing to start making on Mars though. That and air and water.

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