火星：火星上的一天免费在线观看完整版未知　　An epic journey revealing the real Mars, as you've never seen it before. Using data from orbiters and rovers to build accurate views of the red planet and uncover its secrets. On a single circuit of Mars from dawn to dusk, encounter monster volcanos, ancient lakes, alien ice-worlds and spacecraft crash sites. Explore humanity's Martian obsession, join the relentless search for life there, and hunt for a human home on the red planet's surface.