John M. Grunsfeld

I'm absolutely compelled for NASA to send international astronauts to Mars to find out if Mars ever harbored life.

— John M. Grunsfeld

Sciences are being unified by the search for life in the universe.

— John M. Grunsfeld

The most striking thing to me about human space flight and my own personal experience is that I've seen dramatic changes on…

— John M. Grunsfeld

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

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

Going to Mars would make NASA great again.

— John M. Grunsfeld

Hubble uniquely has been able to look in the atmosphere of a planet orbiting a nearby star and figure out what's in…

— John M. Grunsfeld

I got lucky and got assigned to Hubble.

— John M. Grunsfeld

I see no difference between scientific exploration and human exploration.

— John M. Grunsfeld

Being an astronaut, there are not a lot of things that have really shocked me in my life.

— John M. Grunsfeld

I kind of feel like I found my cause in life servicing the Hubble Space Telescope.

— John M. Grunsfeld

I'm an incurable romantic. But I'm not an adrenaline junkie.

— John M. Grunsfeld

One of the things that happens in space is that there is a fluid shift. You get a lot of extra pressure,…

— John M. Grunsfeld

The things I like to do involve a lot of mental focus, a combination of physical and mental challenge. That is what…

— John M. Grunsfeld

Once in a while, the universe lets you be free alone and in peace.

— John M. Grunsfeld

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

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

We need to move off the planet. And Mars is the next best place.

— John M. Grunsfeld

Growing up in Highland Park, in high school, I had some very influential teachers: I had a math teacher who taught calculus…

— John M. Grunsfeld

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

The first thing to know about space food - it is the ambiance; it is the environment. It is not the food.

— John M. Grunsfeld

I grew up on the south side of Chicago in the 1960s, and I think there was a synchronicity of events that…

— John M. Grunsfeld

The moon's a nice place to visit, but you wouldn't want to live there.

— John M. Grunsfeld

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

There are some things worthy of risking your life for.

— John M. Grunsfeld