霍金最后指出,人类有望驾驶宇宙飞船做时光旅行,届时从地球到银河系边缘的漫长路程仅需八十年,这给人类殖民外太空带来了技术上的可能。
“Many people have asked me why I am taking this flight. I am doing it for many reasons. First of all, I believe that life on Earth is at an ever-increasing risk of being wiped out by a disaster such as sudden nuclear war, a genetically engineered virus, or other dangers. I think the human race has no future if it doesn't go into space. I therefore want to encourage public interest in space” ----------Stephen William Hawking