I remember taking a space walk on the ISS. There I was, wrench in hand, tightening bolts on a new module. It was such a mundane task. But when I looked in one direction, there was Earth floating in vivid blues and greens. In the other direction, I could see the blackest black conceivable, punctured by unwavering pinpoints of starshine.

You might have heard about a transformation that can occur when someone first sees Earth from space - how it becomes harder to think about 'my country' or 'my people' and harder not to think about 'our planet.' I can tell you, that transformation is real.

Science does not just drive space travel - space travel also drives science.

Leroy Chiao Quotes