At the age of six, I declared that I wanted to be an astronaut. My mother thought that was just fine, as it would encourage me to learn science, and besides, there really was no chance I would ever actually become an astronaut.

All space exploration is risky. As an astronaut, I had to decide each and every time I went to space whether or not to risk my life for the mission.

I have dedicated my life to answering the great scientific questions of our time and to the incredible adventure of space exploration.

John M. Grunsfeld Quotes