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> None of that justifies claiming the cost is due to gravity. It scales a lot with gravity. Compare the cost of a vehicle capable of reaching lunar orbit (e.g
by mr_toad 4y ago
> None of that justifies claiming the cost is due to gravity.
It scales a lot with gravity. Compare the cost of a vehicle capable of reaching lunar orbit (e.g. the Eagle), with the cost of getting humans into Earth orbit (e.g. the Mercury-Atlas). And the Eagle carried two people.
- pfdietz 4y agoSure, but once you're in space things can become easier, with high Isp engines and in situ propellant production. It's not necessarily all chemical rockets with fuel lifted from Earth.