2016年8月1日 星期一

‘Apollo on steroids’: The rise and fall of NASA’s Constellation moon program

In part 2 of our series on the evolution of NASA's Journey to Mars, Michael Griffin gives the Constellation moon program a new look in an attempt to shorten America's International Space Station access gap after the space shuttles retire. But by 2009, the program is behind schedule and over budget.

from Planetary Society Blog http://ift.tt/2aJ3gyC
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