What do you mean by that? Everything this is moving? You mean that Mars is getting farther away? Isn't that always changing? Sometimes it's actually getting closer. It's also very possible that we could make ships that travel faster, couldn't we? That would also reduce travel time. 2-3 years to get to Mars does sound like a whole lot of time though. That's certainly no trip the corner store!
That's why they are training teenagers for Mars... and also, because the kids look at the glory, not having had experience of life enough to understand the stupidity.
https://www.express.co.uk/news/world/991538/space-news-mars-manned-mission-alyssa-carson-nasa-astronaut
How does that explain that "Past candidates have ranged in age from 26 to 46, with the average age being 34"? If you get less stupid the older you get, then, by your logic, the age of astronauts should be much younger. It's interesting that she's learning Chinese, French and Spanish. Seems like the Russians are getting left out on future space travel. I had no idea that Spanish speakers are playing a bit role in space. I remember when Cirque du Soleil's founder, Guy Laliberte, went to space, he had to study Russian beforehand. It seems pretty ambitious to say you're going to Mars in 2033, when you don't even have the rockets to do it yet: "NASA is currently in the early stages of planning its first manned mission to Mars, with experts developing new rockets capable of getting a spacecraft there - and back to Earth again." I guess time will tell.