Xin,, December 15-it is learned that Microsoft co-founder Allen (Paul Allen) is planning to build an alternative to the shuttle spacecraft, with the intention of paying passengers into space before year 2020. Allen has been a space enthusiast, he hoped that the large aircraft launched on unmanned rockets, Government and commercial satellites into space, and technology evolution to be able to execute a manned space mission. A few months ago, United States declared its shuttle program termination of the operation of 30 years, providing the opportunity for private companies operating spacecraft. Allen planned to use larger aircraft by the defense contractor Northrop Grumman company Scaled Composites to construct, consists of six large Jet engine-driven, will be the world's largest aircraft. The aircraft wingspan of 117 meters, larger than a football field, than Boeing 74
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