Take a journey into the New Space Frontier ! It is easy to imagine that the space shuttle's retirement has edged the Space Age toward closure, at least in terms of human flight beyond the bounds of earth. In fact, there are more people-carrying ships being constructed now than at any time since Yuri Gagarin became the first man in space half a century ago. Some are already servicing the International Space Station - which, incidentally, has ensured...
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