> the new world How is that relevant at all? The only thing that comes close to mars are mostly self-sustainable colonies (not a thing) in Antarctica (which is

> the new world How is that relevant at all? The only thing that comes close to mars are mostly self-sustainable colonies (not a thing) in Antarctica (which is still a more habitable place than Mars by several magnitudes). > we did the last time we explored a new frontier Because the cost was relatively extremely low and there were practical reasons to do that?