Space.com: 天宫-I落点的准确预报说明中国导弹预警卫星已经投入使用

https://www.space.com/40168-china-space-station-tiangong-1-crash-tracking.html

But the precision of the times given by China in particular raises an intriguing possibility, McDowell added: "I was very surprised that the Chinese knew when it came down. That's very interesting. What I think this means … is that the first Chinese missile-warning satellite is actually operational now," he said. "They launched it a year or so ago, and it's a big infrared satellite in geostationary orbit, and I'm betting that that's how they knew it came down."

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• Agree -2544- ♀ (0 bytes) () 04/05/2018 postreply 06:55:13

• 最终的再入区域和中国发布的再入预测区域相比差了一个大洋的距离 -TBz- ♂ (2221 bytes) () 04/05/2018 postreply 09:18:54