Rocket Science Is Tough, And Rockets Have

The Thing I'll Remember Most About The Flight Is That It Was Fun. In Fact, I'm Sure It Was The Most Fun That I'll Ever Have In My Life.

Anything From Making A Mistake On An Experiment That Would Ruin Some Scientist On Earth's Experiment - Career, Potentially - To Doing Something Wrong With The Satellite That A Country Was Depending On For Its Communications, To Making Some Mistake That Could Actually Cost You And The Crew Either A Mission Or Your Lives. So There Is A Lot Of Pressure That's Put On Every Astronaut To Just Make Sure That He Or She Understands Exactly What To Do, Exactly When To Do It, And Is Trained And Prepared To Carry It Out.

It Takes A Few Years To Prepare For A Space Mission.

Ever Been To Disneyland? That Was Definitely An E Ticket!

So Most Astronauts Are Astronauts For A Couple Of Years Before They Are Assigned To A Flight.