地球上的资源终究是有限的,要想实现未来进一步的发展,甚至最终冲出太阳系实现恒星际航行,人类或许需要将眼界放宽一些,考虑对太阳系其他区域的矿产资源进行开采。要想建造一艘在人类可以忍受的时间范围内——比如数十年内飞抵另一个恒星系的超级飞船不但是极其困难,而且还是极其昂贵的,研制这样一艘飞船的耗资可能将高达数千亿美元。但是星际航行的支持者们并不以 After all, the resources on the earth are limited. To achieve further development in the future and eventually eventually out of the solar system to achieve interstellar voyage, humans may need to relax their horizon and consider mining mineral resources in other parts of the solar system. Building a spaceship that can last humankind for hours - such as decades before, to a different star system is not only extremely difficult but also extremely expensive, and the cost of developing such a spacecraft could be as high as several One hundred billion dollars. But Star Trek backers did not