What happens when you have the right stuff at the wrong time?

Members of NASA’s astronaut corps have been asking just that, now that the space shuttle program is ending and their odds of flying anywhere good anytime soon are getting smaller. The Endeavour is scheduled to launch this week, and the Atlantis is supposed to fly the last shuttle mission in June — and all the seats are spoken for.

“Morale is pretty low,” said Leroy Chiao, a former astronaut who now works for a company that wants to offer space flights for tourists. “This is a time of great uncertainty.”

Under President Obama, NASA’s human spaceflight program has been curtailed. The Ares I and Constellation programs, which were meant to succeed the space shuttles and take astronauts to the moon, were canceled, and NASA is instead hiring outside companies to devise alternatives.