You think so? I know there are major obstacles they are still hurtling/ figuring out but I thought they were seeing it happening within in the next ten years or so. My opinion it is most certainly only a matter of time, and it will happen in far less time than 70 years. Think of how many amazing leaps have been made in the past 70 years, and how technological advancements have proceed exponentially, things are outdated in months to a year. I can't imagine it taking that long to launch a mission to mars. They have already tackled issues first thought to make such a mission impossible.