ThinkTank Topic: Let's discuss the real Engineering, AeroSpace and Science that would be required to make Mars Colony One work based on what we know today.    Parameters: Available data, available technology, current state of Science and AeroSpace Engineering. Nothing "flight-of-fancy" that would belong in "It's a Conspiracy!", please -- I'll ask a Moderator to remove it immediately. Anything that we know for a fact that is forthcoming is fine (like Falcon Heavy, Orion, STS, etc), and anything