There's a need for accepting responsibility - for a person's life and making choices that are not just ones for immediate short-term comfort. You need to make an investment, and the investment is in health and education.

A hybrid human-robot mission to investigate an asteroid affords a realistic opportunity to demonstrate new technological capabilities for future deep-space travel and to test spacecraft for long-duration spaceflight.

There's no guarantee that the United States will be around 200 years from now.

We really didn't devote a lot of time to investigating the scariest aspects of our flight. It was more challenging and productive to concentrate on the remedies, and leave things that couldn't be solved to happen without thinking about them. There is a morbid human curiosity associated with tragic death-producing events. Though naturally, this needs to be kept in perspective.

I inherited depression from my mother's side of the family. Her father committed suicide. She committed suicide the year before I went to the moon.

Human rights problems will always exist for years to come, but maybe they'll lessen somewhat.

In space, you don't get that much noise. Noise doesn't propagate in a vacuum.