This flight was an engineer's dream. We are collecting so much data. We are looking at several different types of sensors. We are doing things we never imagined we would be able to do.

If you have a passion, find what your passion is. When I go into work, I feel like I'm going to play because I love it so much.

Tragically, two years ago, we came once more to realize that we had let our guard down. We became lost in our hubris and learned once more the terrible price that must be paid for our failures. In that accident, we not only lost seven colleagues, we lost seven friends.

I want to see my family. We all want to get a great shower, get cleaned up and have a great dinner.

In that accident, we not only lost seven colleagues, we lost seven friends, ... They believed in space exploration. They knew the risks, but they believed in what they were doing. They showed us that the fire of the human spirit is insatiable.

Friendship is an arrangement by which we undertake to exchange small favors for big ones.