Will SpaceShipOne win the X Prize?According to the news, it's been officially announced that it indeed did win the X Prize. They said it would be formally awarded in St. Louis on 6Nov.
Is this a significant leap for humankind?I think it's a remarkable achievement and certainly a demonstration of what is possible for the human spirit for those willing to dream big dreams. But, I don't think this flight added significantly to the science or technology of space flight.
Will commercial flights into space that are economically viable become a reality?A sub-orbital flight like this is most certainly possible and probably economically feasible. We're probably not that far off from something like that. Going into orbit though is a whole new thing, and we're not close to that on a commercial basis at this point. But, who knows? People can do remarkable things.
How will this achievement benefit humankind?The primary benefit is that it sparks the imagination and kindles dreams in people. Just when it seems there are no new frontiers left for pioneers, someone like Burt Rutan comes along and does something like this. All of a sudden it dawns on other dreamers that maybe there is still something for me to do "out there" and they look for it. That's a good thing I think for the human species, it's the kind of thing we were designed to do.