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60 Seconds

60 Seconds

作者:郑尕等  时间:2019-03-07 08:05:00  人气:

Spy plane takes off? The US air force launched a second uncrewed X-37B space plane into low-Earth orbit on Saturday. The first such craft was launched in 2010 and spent nearly eight months in orbit before landing itself. The purpose of the vehicle is unclear,