Lots of kids grow up dreaming of someday making it to outer space, only to find as they get older that their chances of making it into NASA's astronaut program are incredibly slim.
For most people, that's the end of the dream, but some leaders of industry didn't give up quite so easily. The rise of private spaceflight companies has reinvigorated their fascination — and these visionary founders are willing to put their cash on the line to explore it further. Several high-profile business leaders, entrepreneurs and successful dreamers have made significant investments in space programs. Here's a look at some of the biggest names.