Together, the twin, 384-pound rovers make up a single 820 million US dollar mission to seek out geological evidence to ascertain if Mars were ever a wetter planet capable of sustaining life.
Together, the twin, 384-pound rovers make up a single 820 million US dollar mission to seek out geological evidence to ascertain if Mars were ever a wetter planet capable of sustaining life.
据悉，美国航空航宇局为了确定火星是否适合生物生存，耗费八亿两千万美元的巨资，发射“机遇号”和“勇气号”登陆火星。