I am excited to think that the development of commercial capabilities to send humans into low Earth orbit will likely result in so many more Earthlings being able to experience the transformative power of space flight.

America must dream again, and have the faith to achieve the dream.

I feel we need to remind the world about the Apollo missions and that we can still do impossible things.

Space tourism is a logical outgrowth of the adventure tourist market.

My own American Dream was to serve my country as best I could and make a difference in America - and in the world.

The best way to study Mars is with two hands, eyes and ears of a geologist, first at a moon orbiting Mars... and then on the surface.

Unfortunately, pioneers will always pave the way with sacrifices.