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Or to just go to the rings of Saturn, which are mostly water ice, and which give you the added advantage of having something pretty to look at while you refuel.
by onychomys 8y ago
Or to just go to the rings of Saturn, which are mostly water ice, and which give you the added advantage of having something pretty to look at while you refuel.
- PaulHoule 8y agoExactly, go outside the frostline and you are swimming in it. If you want to get away from it (or move it around) you can use some of it to make fuel or use it directly as reaction mass. Beyond the frost line the scale is so much bigger. A population of 1 trillion beings in the Oort cloud is not going to be in a position of taking over the Earth and moving population there because it doesn't move the needle. They could create more "living space" by cutting up a Kuiper Belt Object and turning it into small ringworlds. I am not joking when I talk about Pluto as a better space colonization target than dry Mars. Space technology from outside the frost line would have to be reconfigured to work inside the front line, why bother?