Our role is to develop techniques that allow us to provide emergency life-saving procedures to injured patients in an extreme, remote environment without the presence of a physician.

Spaceflight isn't just about doing experiments, it's about an extension of human culture.

The rough and ready improvisational quality to life on board the International Space Station is reminiscent of a long trip in a sailboat: privacy and fresh produce are in short supply, hygiene is basic, and a fair amount of the crew's time is spent just on maintaining and repairing the craft.

I want to know: How does a space suit on Mars work? Show me how it is pressurized, and how it is cooled. What's the glove design? None of that stuff can be bought off the rack. It does not exist. You can't just go to SpaceMart and buy those things.

The Moon has given us months, tides and a destination that ever-beckons. It's time we build a rocket and go to stay.

Remember, nobody changes the world on their own.

Almost everything worthwhile carries with it some sort of risk.