This photo, taken on April 23, 2025, shows students operating a simulated Mars rover during a space carnival at Nanjing University of Aeronautics and Astronautics. (Photo/CFP)

China designated April 24 as its Space Day in 2016 to mark the successful launch of its first satellite, Dongfanghong-1, on April 24, 1970. A wide range of space-themed activities took place across the province on the 10th Space Day.

Primary school students explore space technology during a space carnival at Nanjing University of Aeronautics and Astronautics, April 23, 2025. (Photo/CFP)

Primary school students in Hai'an High-Tech Zone, Nantong City, Jiangsu Province, learn about space science through hands-on activities on April 23, 2025. (Photo/CFP)

Photo taken on April 23 shows primary school students in Haizhou District, Lianyungang City, Jiangsu Province, taking part in space exploration-themed activities, April 23, 2025. The students assembled models of Tiangong-1, carrier rockets, lunar rovers, and launch pads, to experience the excitement of technological innovation. (Photo/CFP)

Photo taken on April 23 shows primary school students in Haizhou District, Lianyungang City, Jiangsu Province, taking part in space exploration-themed activities, April 23, 2025. The students assembled models of Tiangong-1, carrier rockets, lunar rovers, and launch pads, to experience the excitement of technological innovation. (Photo/CFP)