一位冷战之子讲述了在太空竞赛中居于劣势者的见闻感受,以及在人造卫星升空和加加林飞天之后苏联的太空计划如何化为泡影。
A son of the Cold War tells what it was like from the losing side of the Space Race--and how the U.S.S.R.'s space program fizzled after Sputnik and Gagarin
NASA的Swift卫星观察到鹿林彗星,这颗彗星于2009年2月最接近地球。
NASA's Swift satellite views Comet Lulin as it made itclosest approach to Earth in February 2009.
NASA的Swift卫星观察到鹿林彗星,这颗彗星于2009年2月最接近地球。
NASA's Swift satellite views Comet Lulin as it made itclosest approach to Earth in February 2009.
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