对于火星之旅的成员来说,他们没有在空间站上可以享受的消遣——观赏地球变化无穷的美丽面孔。太空在他们眼中是漆黑一片,地球只不过是一个小小的斑点。此外,他们还必须忍受与地球通讯长达10分钟的时间延迟。他们无法跟地球上的任何人通电话,只能通过电子邮件和声音邮件与家人联系。而且,他们的思乡情绪可能充满恐惧,因为太空站上的宇航员几个小时就可以回一趟家,而他们却连想都不敢想。 For members of the Journey on Mars, they do not have the pleasure of enjoying on the space station - watch the beauty of the Earth’s infinitely changing face. Space is dark in their eyes, the earth is only a small spot. In addition, they must also endure delays of up to 10 minutes with Earth Communications. They can not talk to anyone on Earth, and can only contact their families by e-mail and voice mail. And their homesickness may be full of fear as the astronauts on the space station can return home in a matter of hours and they do not even think about it.