http://www.space.com/33079-turning-asteroids-into-spaceships-made-in-space.html https://www.nasa.gov/feature/reconstituting-asteroids-into-mechanical-automata https://medium.com/made-in-space/how-we-want-to-turn-asteroids-into-spacecraft-e95d3214d787#.x49z46bnq 三篇相关文章，感觉可以撸一篇文
