Oh about a dozen different people/groups. The FAA even has new rules adopted to regulate it because there are so many people/groups doing it now.
Fly girl, actually how many of thise socalled "shuttles" are flying? btw the Dragon capsule is a capsule not a "space shuttle". Let me tell you, not even one...and most of them are still on the drawing board. The three only operative shuttles in the world are going "offline" next year. ciao
Please refer to your question directed at me There are over a dozen people or groups currently BUILDING space shuttles in the US. Worldwide there are even more.
you do realize that it takes years to build one?maybe even decades? the link you posted shows their are still on the drawing board. To late for the socalled 2012 event