【现场视频】我国成功发射试验二十一号卫星
北京时间2022年12月16日14时17分，我国在西昌卫星发射中心使用长征十一号运载火箭，成功将试验二十一号卫星发射升空，卫星顺利进入预定轨道，发射任务获得圆满成功。据了解，此次发射的卫星主要用于开展空间新技术在轨验证试验。
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