Once we get beyond Mars, which formed from the same stuff as Earth, the likelihood that life is similar to what we find on this planet is very low. John M. Grunsfeld Read Quote
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. John M. Grunsfeld Read Quote
The Martian atmosphere is very thin. It’s like our atmosphere at 100,000 feet. John M. Grunsfeld Read Quote
As soon as I could ride a bike… I was always riding over to the Museum of Science and Industry to explore. It’s where I first began to develop a fascination with machines and scientific principles. John M. Grunsfeld Read Quote
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 Read Quote
To help enable the kind of science Hubble is performing makes my life worthwhile. John M. Grunsfeld Read Quote
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. John M. Grunsfeld Read Quote
I kind of feel like I found my cause in life servicing the Hubble Space Telescope. John M. Grunsfeld Read Quote
