<p>　　The dream of sending humans to Mars is closer than ever before. In fact, many scientists think that the first person to set foot on the Red Planet is alive today. But where should the first explorers visit when they get there?<br/>　　Horizon has gathered the world's leading experts on Mars and asked them: where would they go, if they got the chance - and 三米影视为您提供云视频地平线系列：火星旅行者指南在线观看(HD)，喜欢的话，不要忘记收藏本站网址哦！