> The problem is, it would cost almost as much as a real mars mission. I understand that's what the estimates say, but how is that reasonable? The mars mission

> The problem is, it would cost almost as much as a real mars mission. I understand that's what the estimates say, but how is that reasonable? The mars mission would include a biosphere of some kind, right? Is the Biosphere 3 estimate far too high? Or is the Mars mission estimate far too low?