Rocket scientists agree that we have about reached the limit of our ability to travel in space using chemical rockets. To achieve anything near the speed of light we will need a new energy source and a new propellant. Nuclear fission is not an option.

There is no scientific reason to think that we even with space travel are going to survive as a species for ever certainly not by biting off the hand that feeds us which is exactly what we are doing.

At the moment I'm doing this space movie so I'm obsessed with physics and space travel. I know three months down the line it's gone. Then I'll be able to superficially say stuff about space.

Aviation - and space travel in particular - have always been especially captivating.

I think that somebody with the resources and innovation and the idea is going to come out of nowhere and come up with a successful space travel program.

Air travel is the safest form of travel aside from walking even then the chances of being hit by a public bus at 30 000 feet are remarkably slim. I also have no problem with confined spaces. Or heights. What I am afraid of is speed.

Man is an artifact designed for space travel. He is not designed to remain in his present biologic state any more than a tadpole is designed to remain a tadpole.

Love is space and time measured by the heart.

It is only in the world of objects that we have time and space and selves.

Many a trip continues long after movement in time and space have ceased.