"We've got multiple layers of (repair) techniques, but my gut feeling is that we won't have to do any of those. We've had little dings in the belly over 10,000 times and it's well within our experience."

"You're there out in space all by yourself and you know that you're holding on to your spaceship, but you've got the whole universe on your left and then the whole world turning beautifully on your right," he said.

"The No. 1 astronaut prayer is 'Don't let me screw up."'