If you start thinking that only your biggest and shiniest moments count, you're setting yourself up to feel like a failure most of the time.

Spaceflight isn't just about doing experiments, it's about an extension of human culture.

Most budget airlines anywhere in the world are going to leave you dissatisfied after using them.

I'm really looking forward to it, if you can imagine floating weightless, watching the world pour by through the big bay window of the space station playing a guitar; just a tremendous place to think about where we are in history.

Every single day you're the result of what you did on the days prior.

I'm not a wealthy person and I don't think that I would be able to prioritize that much money to go for a ride to a place that I have already lived. But if the price comes down or I win a lottery or something, why not?

For the last several years and culminating in six months in orbit next year, I've been training for my third space flight. This one is almost in a category completely different than the previous two, specifically to live in on the space station for six months, to command a space ship and to fly a new rocket ship.