Avery: I've got a full-time job circulate bean order zetia ten An extremely grueling and competitive process ensures that only the best make it into astronaut training–and in the case of NASA, only the few as well. Out of thousands of applicants only a few are selected to train to see the world from outer space. Thus, competitors must find ways to stand out from the crowd if they want the opportunity to become an astronaut. Adding to the competitiveness, NASA only trains a new group of astronauts every four to five years, so if an applicant is not accepted they must wait and compete with a new group in the next round.