When I started working at NASA and understanding what the capabilities really were of the space station and the space program, one of the biggest draws for me was the ability to do experiments in space. We can do a number of experiments where gravity is actually a variable.

There's a world of insights to be gained into human health and disease by understanding how gravity and space radiation influence biology.

For long-duration exploration missions, NASA is looking for folks with a lot of operational, hands-on experience, people who have been in field-type situations such as military deployments. In my case, I worked in the Congo and in Biosafety Level 4 labs on smallpox.

You need nerves of steel if climbing aboard a rocket is your career path.

The Israeli military plays more than a critical role in defending the citizens of the Jewish state. It also plays an important social, scientific and psychological role in preparing its young citizens for the challenging task of being Israelis in a difficult world.

Everything is fraught with danger. I love technology and I love science. It's just always all in the way you use it. So there's no - you can't really blame anything on the technology. It's just the way people use it, and it always has been.

Books are the money of Literature, but only the counters of Science.

The science shows that the best way to use money is to take the issue of money off the people. Pay people enough so that money isn't an issue, and they can focus on doing great work.