astronauts

China spent tens of billions of dollars on a dazzling 2008 Olympics. It has sent astronauts into space.

From Astronauts and Astronomers... to Private Cooks and the President... Here is a look at the 11 rarest careers in America to land.

NASA's new boss said Tuesday he will be "incredibly disappointed" if people aren't on Mars — or venturing somewhere beyond it — in his lifetime.