m********5
发帖数: 17667 | 1 From there we do not need to use chemical engine to launch them. Ion
thruster would be enough. The only problem will be can we create a foundry
working without water? If someone can do this, he/she will start the space
era. | m********5
发帖数: 17667 | 2 The main issue drag us down here is lacking water. Almost all terrain
industries a heavily depend on water supply, which cannot be fulfilled in
space or other planets.
【在 m********5 的大作中提到】
: From there we do not need to use chemical engine to launch them. Ion
: thruster would be enough. The only problem will be can we create a foundry
: working without water? If someone can do this, he/she will start the space
: era.
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