* Astronomy

Alarm system to help Shenzhou 7 avoid debris
Shenzhou 7 fitted with alarm system to avoid space debris

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China has launched its third manned space mission - which is to feature the country's first spacewalk.
The Shenzhou VII capsule soared into orbit atop a Long-March II-F rocket from the Jiuquan spaceport in Gansu province in the northwest of China.
The 70-hour flight will include a spacewalk undertaken by 42-year-old fighter pilot Zhai Zhigang.

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China successfully launched a three-man crew into space Thursday to carry out the country's first spacewalk, beginning the nation's most challenging space mission since it first sent a person into space in 2003.
The Shenzhou 7 spacecraft, China's third manned mission, blasted off atop a Long March 2F rocket shortly after 9 a.m. EDT under clear night skies in north-western China.
The spacewalk by one of the astronauts is expected to take place either on Friday or Saturday.

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