Reader hackingbear writes: China’s next space laboratory, Tiangong-2 launched from the country’s Jiuquan Satellite Launch Center today at 10:04 a.m. EDT (1404 GMT) on a Long March 2F carrier rocket. Like its predecessor Tiangong-1, Tiangong-2 is an orbiting space lab — but this latest model has made several improvements in the series. Among the advances: astronauts can remain on the station up to 30 days; New systems allow in orbit refueling of propellant; and 14 new experiments in a wide range of sciences including composite material fabrication, advanced-plant cultivation, gamma ray burst polarization, fluid physics, space-to-earth quantum communications. The space lab is also equipped with a cold atom space clock, that has an estimated precision of 10 to the power of minus 16 seconds, or a one-second error every 30 million years, enhancing accuracy of time-keeping in space by one to two orders of magnitudes. This exactitude will help measure previously undetectable fluctuations for experiments conducted in zero-gravity.The Tiangong 2, while is an experimental space station, is still operational. The astronauts that would come on board next month are to spend a full month up there — a longer period of time than possible on Tiangong 1.

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Source: Slashdot – China Launches Second Space Lab