viernes, 9 de marzo de 2018

#Climbing Rock Climbing on Mars: A Simulation

If you live in the Portland, Oregon, area, you may have been surprised as you walked along the coast last August to see an astronaut dry-tooling up a cliff. “Why are you doing that?” you might have asked, to which he would have replied, “Testing”—namely, testing to see how well his suit would ...

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