84 Quotes by John M. Grunsfeld

The Martian atmosphere is very thin. It's like our atmosphere at 100,000 feet.

InSight will get to the 'core' of the nature of the interior and structure of Mars, well below the observations we've been able to make from orbit or the surface.

The only reason Hubble works is because we have a space shuttle.

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

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.

One of the things that happens in space is that there is a fluid shift. You get a lot of extra pressure, and it fills your sinuses, and the horseradish is a miracle worker for cleaning that out.

The Hubble Space Telescope is more than remarkable. It has answered just so many of those fundamental questions that people have been asking about the cosmos since people were able to ask questions.

A deep ocean under the icy crust of Ganymede opens up further exciting possibilities for life beyond Earth.

I look forward to working with the NASA team to help enable new discoveries in our quest to understand our home planet and unravel the mysteries of the universe.