Chris Hadfield

In the late '60s, I was seven, eight, nine years old, and what was going on in the news at that time that really excited a seven, eight, nine year old boy was the Space Race.

I've been so lucky to have done two spacewalks. If you looked at your wristwatch, I was outside about 15 hours, which is about 10 times around the world. And, you know, there's a whole time dilation, distortion thing.

The best simulator for spacewalking is underwater - it allows full visuals and body movement in 3D. Virtual reality is good, too, and has some advantages, like full Station simulation, not just part. Like all simulators, they have parts that are wrong and misleading: an important thing to remember when preparing for reality.

While on the space station, I kept up with news a couple of ways - Mission Control sent daily summaries, and I would scan headlines on Google News when we had an Internet connection, which was about half the time.

I once made myself black out by pulling G too quickly while flying an F-18. Being unconscious in a single-seat airplane is not good. Fortunately, I woke up in time. I learned how to better plug-in my anti-G suit.

The beauty of the space station, and of human spaceflight, is that it is now at a level of maturity where you can invite people on-board, which is what I worked so hard to do on social media and all the videos I made.

It is spectacular. From about five minutes in, when we knew for sure that we were going to have the weather to go, the smile on my face just got bigger and bigger, and I was just beaming through the whole launch. I mean, it is just an amazing ride.