I inherited depression from my mother's side of the family.

The universe is the way it is. It's not going to be changed by supplications.

The way I see it, commercial interests should manage a lunar base while NASA gets on with the really important task of flying to Mars.

Everyone who's been in space would, I'm sure, welcome the opportunity for a return to the exhilarating experiences there.

Look at what Silicon Valley has done - the advance of computers.

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.

At the core of the risk-free society is a self-indulgent failure of nerve.