2014年10月29日 星期三

Asteroid Redirect Mission Critique

Human spaceflight: Find asteroids to get to Mars "Some options are better than others. The cost and complexity of human space exploration demands that each element be measured by its value towards the ultimate goal: Mars. But NASA's stated next...



from NASA Watch http://nasawatch.com/archives/2014/10/asteroid-redire-2.html

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