A security guard adjusts his mask near an exhibition of rovers and bio-domes on Mars in Beijing Thursday, July 23, 2020. China launched its most ambitious Mars mission yet on Thursday in a bold attempt to join the United States in successfully landing a spacecraft on the red planet. The Tianwen-1 was launched on a Long March-5 carrier rocket from a launch site on Hainan Island. (Photo by Ng Han Guan/AP Photo)
