I personally think going to Mars, if it takes two years or two and a half years, that's doable. Certainly, the first people who go there, that's going to be a big motivator, being first getting to Mars.

If you go on a journey to Mars and get into deep space, there is several hundred times, maybe 300 times the radiation.

I don't think people have an appreciation for the work that it takes to pull these missions off, like humans living on the space station continuously for 15 years. It is a huge army of hard-working people to make it happen.

Me, personally, I was a Mets and Giants fan.

The first satellites go into orbit around Mars in 2008, as many as a half dozen of them,

I believe in exploration, and I will miss being on the front lines of that endeavor. On one hand, I look forward to going home, but it's something that's been a big part of my life, and I'm going to miss it.