视频丨我国成功发射通信技术试验卫星二十一号

Core Points - The successful launch of the communication technology test satellite No. 21 was conducted using the Long March 3B rocket at the Xichang Satellite Launch Center on November 21, 2025 [1] - The satellite is intended for satellite communication, broadcasting, television, and data transmission, along with related technology testing and verification [1] Group 1 - This mission marks the 609th flight of the Long March series of launch vehicles [4]