When I was a little kid, we only knew about our nine planets. Since then, we've downgraded Pluto but have discovered that other solar systems and stars are common. So life is probably quite prevalent.

We must still think of ourselves as pioneers to understand the importance of space.

The purpose of going to Mars is for humans to first begin to occupy, permanently, another planet in the solar system. The astronauts or pilgrims, whatever you might call them, are going to be very historically unique human beings.

Ray Bradbury is one who is contributing to the understanding of the imagination and the curiosity of the human race.

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

We could have human intelligence in orbit around Mars, building things there.

There are always door openings. And gradually, it accumulates. The opportunities open up in front of you.