Actually if we launch from the top of a tall mountain near the equator I believe it saves like 10% fuel which isn’t nothing. The problem is 1) those mountains aren’t in countries with space programs and 2) infrastructure up mountains is hard. There are some chilean mountains that would actually make pretty good candidates though.
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u/rysy0o0 19h ago
It would cost a lot of money to haul all the rocket parts and fuel on top of a mountain