Mars has been flown by, orbited, smacked into, radar examined, and rocketed onto, as well as bounced upon, rolled over, shoveled, drilled into, baked and even blasted. Still to come: Mars being stepped on.

The biggest benefit of Apollo was the inspiration it gave to a growing generation to get into science and aerospace.

If we can conquer space, we can conquer childhood hunger.

Retain the vision for space exploration. If we turn our backs on the vision again, we're going to have to live in a secondary position in human space flight for the rest of the century.

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

Neil Armstrong was the first man to walk on the moon. I am the first man to piss his pants on the moon.

The way I see it, commercial interests should manage a lunar base while NASA gets on with the really important task of flying to Mars.