About this video
The Long March-5 Y10 launch vehicle (长征五号遥十) launched TJSW-23 (通信技术试验卫星二十三号, Communication Technology Test Satellite 23) from the Wenchang Spacecraft Launch Site Hainan Province, China, on 20 December 2025, at 12:30 UTC (20:30 local time). According to official sources, the satellite entered the planned orbit and will be “mainly used to carry out multi-band and high-speed communication technology validation tests”. Credit: China Central Television (CCTV)/China Aerospace Science and Technology Corporation (CASC)