卫星
Isro's LVM3-M6 mission to launch BlueBird Block-2 satellite today
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The Indian Space Research Organisation (Isro) will launch the BlueBird Block-2 communications satellite for US company AST SpaceMobile today using its heavy-lift Launch Vehicle Mark-3 (LVM3). Weighing 6,100 kg, it will be the heaviest payload ever placed in low Earth orbit by the LVM3. The mission marks a milestone in Isro's commercial space efforts.
NASA's Van Allen Probe A satellite, launched in 2012 to study Earth's radiation belts, is set to reenter the atmosphere early this week after running out of fuel in 2019. The agency has approved a safety waiver due to the reentry's risk exceeding government standards, though the chance of harm remains low at 1 in 4,200. Most of the 1,323-pound spacecraft will burn up, with some debris potentially reaching the surface.
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中国研究人员近日推出了一种基于卫星数据和人工智能技术的风暴临近预报系统，能够提前高达4小时有效预报对流天气。该成果发表于《美国国家科学院院刊》，由国家卫星气象中心王静松及多所大学和研究机构的研究员共同完成。