The Mars ambition, when it works, has a future. It is possible with long time spans to make Mars a livable planet with a sizable civilization. The Moon isn't q

The Mars ambition, when it works, has a future. It is possible with long time spans to make Mars a livable planet with a sizable civilization. The Moon isn't quite so favorable for this, the end result wouldn't be as nice and would be more because it would be useful than desirable.