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One major hurdle is that getting to anywhere habitable other than the surface of the Earth is way beyond our technological ability.

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It would be an overstatement to say that it's way beyond our technological ability to get to Mars. That's just a long trip in a rocket away. Making it habitable is also within our ability - Live in the lava tubes, or radiation-protected inflatable shelters. To live on another planet is to take a collection of solved problems and engineer the solutions into existence.

Good point. It does seem within our engineering ability to live inside a habitat on Mars, true.

When I wrote that comment I guess I was probably thinking habitable in a similar way to Earth. Possible to thrive on the surface under ambient conditions.

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