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" Small bodies in our solar system, like comets and asteroids, help us understand how the solar system formed and provide opportunities to advance exploration. "
John M. Grunsfeld
Exploration
Help
Small
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" When I grew up as a kid, we didn't know there were any other planets outside of our own solar system. It was widely speculated that planet formation was an incredibly rare event and that it's possible that other planets just don't exist in our galaxy, and it's just this special situation where we happen to have planets around our sun. "
John M. Grunsfeld
Situation
Know
Sun
" There's no question that if we stay on planet Earth and never leave, that eventually we'll be wiped out. "
John M. Grunsfeld
Earth
Leave
Never
" After my spacewalks, I am quite exhilarated but also tired, similar to a workout on Planet Earth. "
John M. Grunsfeld
Planet
Workout
Am
" Being an astronaut, there are not a lot of things that have really shocked me in my life. "
John M. Grunsfeld
Life
Things
Really
" Growing up in Highland Park, in high school, I had some very influential teachers: I had a math teacher who taught calculus that helped me learn to be in love with mathematics; I had a chemistry teacher who inspired us to work what was in the class and to go beyond. "
John M. Grunsfeld
Work
Teacher
Love
" Science fiction has been an inspiration to generations of scientists and engineers, and the film series 'Star Wars' is no exception. "
John M. Grunsfeld
Science Fiction
Engineers
Science
" Hubble has really opened our eyes to what the universe is made of, its structure, and has helped us learn how little we know about the universe. "
John M. Grunsfeld
Structure
Know
Eyes
" I got lucky and got assigned to Hubble. "
John M. Grunsfeld
Hubble
Got
Assigned
" The '60s were a remarkable time because several things were happening at once. Men were leaving planet Earth, kids were breaking into the television age, and I was able to see Neil Armstrong walking on the moon. "
John M. Grunsfeld
Age
Moon
Men
" Once in a while, the universe lets you be free alone and in peace. "
John M. Grunsfeld
Free
Peace
Alone
" Getting a team of scientists on Mars could be transformative. "
John M. Grunsfeld
Transformative
Mars
Team
" There's a perspective that I've gained as an astronaut that I didn't get from my science activities. In my science activities, I learned by the seat of my pants. Spending 17 years as an astronaut, I learned the NASA formalism of systems engineering as if my life depended on it. Literally. "
John M. Grunsfeld
Perspective
Life
Science
" Here on Earth, we're exposed to asteroids hitting the Earth, eventual changes in the Sun, changes in the Earth's climate, things we're doing to the Earth's climate. If we want to survive, we need to become a multi-planet species. That's further down the road, but the first wave is going to be the explorers. "
John M. Grunsfeld
Doing
Sun
Need
" I believe that the future of humans, and the future of Earth, depends on space exploration. That's not a French problem, or a problem for Alabama: it's a planet-wide problem. International cooperation is crucial. "
John M. Grunsfeld
Earth
Believe
Future
" I see no difference between scientific exploration and human exploration. "
John M. Grunsfeld
Human
See
Exploration
" We're being very careful that we don't send a spacecraft to Mars with the intention of detecting Martian life - and find out that we detected the Earth life that we took with us. "
John M. Grunsfeld
Us
Find
Intention
" I kind of feel like I found my cause in life servicing the Hubble Space Telescope. "
John M. Grunsfeld
Like
Space
Kind
" I'm an incurable romantic. But I'm not an adrenaline junkie. "
John M. Grunsfeld
Incurable
Romantic
Adrenaline
" Hubble uniquely has been able to look in the atmosphere of a planet orbiting a nearby star and figure out what's in that atmosphere. "
John M. Grunsfeld
Look
Out
Planet
" Are we alone? Many, many people on planet Earth want to know. We are on the cusp of being able to answer that question... because of the investments we're making in space technology. "
John M. Grunsfeld
Alone
Know
People
" When I grew up on the south side of Chicago, it was kind of a rough neighborhood, and when my parents saw the prospect of my older sister going to middle school, high school, they decided that we would move to the north side of Chicago, Highland Park, and for me, that was a whole new ballgame. "
John M. Grunsfeld
Sister
High School
School
" I grew up on the south side of Chicago in the 1960s, and I think there was a synchronicity of events that inspired me to be an astronaut, and, of course, the backdrop is nothing less than Mercury, Gemini, and Apollo. That was a time in our nation where we aspired to great things, and we achieved them. "
John M. Grunsfeld
Chicago
Me
Nothing
" I thrive with high-performance challenges in front of me. "
John M. Grunsfeld
Front
Challenges
Thrive
" Our journey in going beyond our home planet is a human endeavor, and in the greatest tradition of exploration, past, present, and future spacefarers will continue to be enduring catalysts for inspiration in our quest to unravel the mysteries of the universe. "
John M. Grunsfeld
Past
Home
Future
" The things I like to do involve a lot of mental focus, a combination of physical and mental challenge. That is what mountain climbing is. "
John M. Grunsfeld
Like
Mental
Challenge
" Our country... invests a tiny fraction of 1 percent in NASA, and this is what's so amazing to me, is with that small investment, we do so much for the country. "
John M. Grunsfeld
Me
Small
Investment
" I was not really scared on my spacewalks. We practice so much and need to stay so focused that it has a calming effect on me. I do a kind of visualization and meditation in the airlock prior to going outside, to guide my first activities once I get out in space. "
John M. Grunsfeld
Me
Meditation
Need
" What we do at NASA is inspiring. It's reaching, it's visionary, and it inspires people on Earth to try hard things. "
John M. Grunsfeld
Try
People
Earth
" A deep ocean under the icy crust of Ganymede opens up further exciting possibilities for life beyond Earth. "
John M. Grunsfeld
Life
Ocean
Possibilities
" The moon's a nice place to visit, but you wouldn't want to live there. "
John M. Grunsfeld
You
Moon
Live