A lot of people is probably aware of this already, as it was all over the news but I think It's worth a mention here.
QuoteAs space shuttle Atlantis's wheels touched down in Florida on Thursday, the shuttles' epoch of defining manned spaceflight came to a close.
http://www.bbc.co.uk/news/science-environment-14220423
QuoteThe US space agency's intention is to invite the private sector to provide it with space transport services, and a number of commercial ventures already have crew ships in development.These are unlikely to be ready to fly for at least three or four years, however.
I think it's up to Carmack now.