SPACE technology has been a sinew of military power ever since the Soviet Union shocked America into the space race when it launched Sputnik 1 into orbit 51 years ago.
51年前苏联将1号人造地球卫星发射上轨，此举使美国大为震惊并引发了太空竞争；
SPACE technology has been a sinew of military power ever since the Soviet Union shocked America into the space race when it launched Sputnik 1 into orbit 51 years ago.
51年前苏联将1号人造地球卫星发射上轨，此举使美国大为震惊并引发了太空竞争；
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