Over the years, I think I've matured in my spiritual evolution and development to understand a bit more than the narrow religious thinking - to move beyond that through a sort of perfection of the grandiose nature of the universe, and how perfect it is it in its sense and how satisfied we should all be in our place in that.

Mars, we know, was once wet and warm. Was it home to life? And what can living and learning to work on its rust-colored surface teach us about the future of our own planet, Earth? Answering those mysteries may hold the key to our future.

We feel that this stands as a symbol of the insatiable curiosity of all mankind to explore the unknown.

There were about six years when there was not one American who went into space. We shouldn't do that again.

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

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

Mars is far more attractive as an outpost colony for earthlings than the moon is.