On Jan. 9, 1968, the Surveyor 7 space probe made a soft landing on the moon, marking the end of the American series of unmanned explorations of the lunar surface.
1968年1月9日，测量员7号空间探测器在月球表面软着陆，标志着美国对月球表面的无人探测系列任务的结束。
Officials with the United Arab Emirates are suggesting the country's newly-founded space agency have plans to sent an unmanned probe to Mars by 2021.
阿联酋官员暗示，该国新建立的宇航局计划于2021年向火星发射一颗无人驾驶探测器。
Officials with the United Arab Emirates are suggesting the country's newly-founded space agency have plans to sent an unmanned probe to Mars by 2021.
阿联酋官员暗示，该国新建立的宇航局计划于2021年向火星发射一颗无人驾驶探测器。
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