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Next year April 12th  2011 marks the 50th anniversary of Yuri Gagarin's,  mankind's,  first steps  into space. It was a product of the accumulated technology of many countries over many years but particularly driven by the the political landscape resulting from the 2nd world war. Since then successful robotic missions have visited the planets, asteroids and comets. 24 men have gone to the moon and a dozen have even walked on its surface. Subsequent achievements have fallen short of the expectations raised in the wake of Gagarin's flight. Gagarin himself  spoke openly about his desire to go to the moon and Mars. That sounds like a pipe dream now but back in 1961, he was absolutely serious and realistic. So what happened? Had the space race been won when Neil and Buzz landed on the Moon? Had the motivation borne out of political rivalries of the cold war finally been exhausted? Perhaps, the problems closer at home of poverty, population growth, environmental concerns  raced to the top of the political agenda