长三乙火箭成功发射通信技术试验卫星二十一号

Core Viewpoint - The successful launch of the Long March 3B rocket marks a significant achievement for China's aerospace industry, demonstrating advancements in satellite communication technology [1] Group 1: Launch Details - The Long March 3B rocket was launched on November 21 at 18:55 from the Xichang Satellite Launch Center [1] - The mission successfully placed the Communication Technology Test Satellite No. 21 into its designated orbit [1] Group 2: Satellite Purpose - The satellite is primarily intended for satellite communication, broadcasting, television, and data transmission services [1] - It will also conduct relevant technology testing and verification [1]