In this photo released by China's Xinhua News Agency, a Long March-5 rocket is seen at the Wenchang Space Launch Center in south China's Hainan Province, Friday, July 17, 2020. China has moved a rocket into position to launch a rover to Mars in one of three upcoming missions to the red planet, one from the U.S. and another by the United Arab Emirates. (Zhang Gaoxiang/Xinhua via AP)