The Tiangong-2 space lab undergoing ground testing before launch. Photo: XinhuaThe Tiangong-2 space lab undergoing ground testing before launch. Photo: Xinhua
The Tiangong-2 space lab undergoing ground testing before launch. Photo: Xinhua

China to launch world’s first ‘cold’ atomic clock in space ... and it’ll stay accurate for a billion years

Device should lose only a second in one billion years

Topic |   China science
The Tiangong-2 space lab undergoing ground testing before launch. Photo: XinhuaThe Tiangong-2 space lab undergoing ground testing before launch. Photo: Xinhua
The Tiangong-2 space lab undergoing ground testing before launch. Photo: Xinhua
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