We need to move off the planet. And Mars is the next best place. — John M. Grunsfeld Copy Share Image
Science at NASA is all about exploring the endless frontier of the Earth and space. — John M. Grunsfeld Copy Share Image
The truth is, every single rocket launch off of planet Earth is risky. — John M. Grunsfeld Copy Share Image
I kind of feel like I found my cause in life servicing the Hubble Space Telescope. — John M. Grunsfeld Copy Share Image
Asteroid detection, tracking, and defense of our planet is something that NASA, its interagency partners, and the global community take very seriously. — John M. Grunsfeld Copy Share Image
InSight will get to the 'core' of the nature of the interior and structure of Mars, well below the observations we've been… — John M. Grunsfeld Copy Share Image
The strangest thing I've found is that when I got to space, I felt more comfortable in space that I've ever been… — John M. Grunsfeld Copy Share Image
I'm absolutely compelled for NASA to send international astronauts to Mars to find out if Mars ever harbored life. — John M. Grunsfeld Copy Share Image
The biggest honor is to be an astronaut. It's such a tremendous privilege to be able to represent humankind in our quest… — John M. Grunsfeld Copy Share Image
I think it's really a sign of great American strength that we do invest the money we do in technology, in these… — John M. Grunsfeld Copy Share Image
All space exploration is risky. As an astronaut, I had to decide each and every time I went to space whether or… — John M. Grunsfeld Copy Share Image
Our country... invests a tiny fraction of 1 percent in NASA, and this is what's so amazing to me, is with that… — John M. Grunsfeld Copy Share Image
We're being very careful that we don't send a spacecraft to Mars with the intention of detecting Martian life - and find… — John M. Grunsfeld Copy Share Image
Are we alone? Many, many people on planet Earth want to know. We are on the cusp of being able to answer… — John M. Grunsfeld Copy Share Image
At the age of six, I declared that I wanted to be an astronaut. My mother thought that was just fine, as… — John M. Grunsfeld Copy Share Image
I think that space exploration as a broad activity is the most important things that humans can do. I've always found it… — John M. Grunsfeld Copy Share Image
The Hubble Space Telescope, which was designed for extreme servicing, you know, we can fix everything. And the James Webb Space Telescope,… — John M. Grunsfeld Copy Share Image
All indications are that three and a half billion years ago, Mars looked like Earth. It had lakes. It had rivers. It… — John M. Grunsfeld Copy Share Image
I believe that the future of humans, and the future of Earth, depends on space exploration. That's not a French problem, or… — John M. Grunsfeld Copy Share Image
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… — John M. Grunsfeld Copy Share Image
The only reason Hubble works is because we have a space shuttle. — John M. Grunsfeld Copy Share Image
The James Webb Space Telescope was specifically designed to see the first stars and galaxies that were formed in the universe. — John M. Grunsfeld Copy Share Image
The surface of Mars is bathed in ultraviolet light, bathed in radiation. Mars's magnetic field is essentially gone, so the surface of… — John M. Grunsfeld Copy Share Image
Sometimes astronauts feel a little ill or get minor scrapes. I trained as a crew medical officer to do basic treatment. — John M. Grunsfeld Copy Share Image
The first thing to know about space food - it is the ambiance; it is the environment. It is not the food. — John M. Grunsfeld Copy Share Image
I can't imagine anywhere I'd rather be than outside the space shuttle in my space suit next to the Hubble Space Telescope. — John M. Grunsfeld Copy Share Image
I have had the privilege to be a member of many high-performance teams at NASA, both on and off the planet. — John M. Grunsfeld Copy Share Image
Being an astronaut, there are not a lot of things that have really shocked me in my life. — John M. Grunsfeld Copy Share Image
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 Copy Share Image
As a young boy growing up on the South Side of Chicago, I was inspired by the nascent space age. — John M. Grunsfeld Copy Share Image
Absolutely the most fun thing to do in space and rewarding thing, in many ways, is to look back at planet Earth. — John M. Grunsfeld Copy Share Image
It's pretty amazing to me that we have had a space shuttle program that's lasted for 30 years - for one space… — John M. Grunsfeld Copy Share Image
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 Copy Share Image
There is no stronger case for the motivational power of real science than the discoveries that come from the Hubble Space Telescope… — John M. Grunsfeld Copy Share Image
I was not really scared on my spacewalks. We practice so much and need to stay so focused that it has a… — John M. Grunsfeld Copy Share Image
Here we were, the only seven humans in space, repairing a telescope whose only purpose is to enrich the minds of people… — John M. Grunsfeld Copy Share Image
I'm absolutely compelled for NASA to send international astronauts to Mars to find out if Mars ever harbored life. — John M. Grunsfeld Copy Share Image
Sciences are being unified by the search for life in the universe. — John M. Grunsfeld Copy Share Image
The most striking thing to me about human space flight and my own personal experience is that I've seen dramatic changes on Earth. We… — John M. Grunsfeld Copy Share Image
At the age of six, I declared that I wanted to be an astronaut. My mother thought that was just fine, as it would… — John M. Grunsfeld Copy Share Image
I can't imagine anywhere I'd rather be than outside the space shuttle in my space suit next to the Hubble Space Telescope. — John M. Grunsfeld Copy Share Image
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 Copy Share Image
I see no difference between scientific exploration and human exploration. — John M. Grunsfeld Copy Share Image
Being an astronaut, there are not a lot of things that have really shocked me in my life. — John M. Grunsfeld Copy Share Image
I kind of feel like I found my cause in life servicing the Hubble Space Telescope. — John M. Grunsfeld Copy Share Image
