3 ms·
And where are you proposing to get the necessary swimming-pool-like volumes of water? Shipped from the Earth at ~$20,000/kg?
by jpatokal 11y ago
And where are you proposing to get the necessary swimming-pool-like volumes of water? Shipped from the Earth at ~$20,000/kg?
- jp555 11y agoThat's only the cost if you use disposable rockets. About the same cost/kg of flying if you're throwing away the 777 after one flight. Reusable rockets are magnitudes cheaper per launch. Or there's robotic in-situ water mining - Ceres has a shallow gravity well and probably has as much water as Earth. Easy? No, but space is always going to be hard.