re: Colonizing Mars- really what’s the point?

quote:

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Then why not just go get the shite we need and come back to earth with it?

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Ummm…you can do that, but you have to advance our understanding of survival in space.

In top of that, humans need gravity.

Why not create a sustainable network on the available planets in our solar system in order to allow for stops between points, especially on the ones with useable gravity?