Astronauts are not superhuman. They lead ordinary lives and have varied personalities.

Somebody would think I was trying to get favored treatment because my ancestors had the name Moon. And that's a joke.

You are not going to change the minds of people who are looking for attention.

At 10,000 feet, the 3 parachutes would come out, a little lower the pressure of the atmosphere outside was greater than inside, and we could smell the salt air and it was very encouraging to return to earth.

It's real easy to manufacture what you think the people want to hear. But that's not very honest.

One of the major problems with long-term deep space human flight is the requirement for radiation shielding.

Space architectures capable of supporting a permanent human presence on Mars are extraordinarily complex, with many different interdependent systems.