National Geographic: "Spacemen Investigated"

A clip from National Geographics programme entitled 'Spacemen Investigated' regarding long term space flight. Date- Aug 2007.
BenyBensays...

>> ^NinjaFish:
now what would take longer... Traveling to a VERY distant planet or terraforming mars? hmmmm... food for thought.


Hmm, Planetery changes occur over billions of year, yes? No doubt with human intervention, we can speed up the process, but just how much faster can we make it?

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