تماشای ویدئو The changing space race The Economist از آی-ویدئو

The space race has changed since the Soviet Union sent Sputnik 1, the first man-made satellite, into space in 1957. The fight for domination is now between private companies rather than governments. Click here to subscribe to The Economist on YouTube: http://econ.trib.al/rWl91R7 The first man-made satellite Sputnik 1 was sent into space in 1957 by the Soviet Union. At the time only governments could afford to launch satellites but technological advances have lowered the barriers to entry and more compani
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