The Mariner space program sent many satellites to Mars. We have excellent photos and information on this neighbor planet, and nothing suggests that there is any life there.

• mariner（水手）太空计划向火星发送了许多人造卫星。我们有关于这颗邻居行星的极好的照片和数据资料，其中没有什么显示出火星存在任何生命。