84 Quotes by John M. Grunsfeld

Getting a team of scientists on Mars could be transformative.

The James Webb Space Telescope was specifically designed to see the first stars and galaxies that were formed in the universe.

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.

Life outside of Earth is probably going to be really hard to find.

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

The surface of Mars is bathed in ultraviolet light, bathed in radiation. Mars's magnetic field is essentially gone, so the surface of Mars is essentially sterilized.

If I could live in space, I would definitely do that.

There's no question that if we stay on planet Earth and never leave, that eventually we'll be wiped out.

It's pretty amazing to me that we have had a space shuttle program that's lasted for 30 years - for one space shuttle. That's quite an achievement.