My favourite thing to do on this planet is to scuba dive.

Some things just can't be described. And stepping onto the moon was one of them.

I'm sure that there are places in the deserts in Australia that could be similar to where we might want to go on Mars.

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

The guys who walk on Mars are going to be historic.

There's no doubt that there will be many trials and tribulations along the way in taming space for the benefit of all, unmasking its truths and using the boundless resources available to us. Taking a chance allows us to seek new horizons -- and we all benefit from being horizon hunters.

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.