This image made available by the China National Space Administration on Thursday, March 4, 2021, shows a high-resolution photo of the surface of Mars taken by China's Tianwen-1 probe as it orbits the planet in preparation for landing. China says a cohort of astronauts have been selected and are in training to carry out four crewed missions this year as the country works to complete its first permanent orbiting space station. (CNSA via AP)
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