Bearded nerd-bohemian Jeff Hester is a space case -- in the best possible way.
Dr. Hester started out at Rice University, getting first a degree in physics, followed by his Master's and PhD in Space Physics and Astronomy.
But it was when he signed on at California Institute of Technology in the 1980s that things got interesting. Hester was part of the team of scientists responsible for the first camera that flew on the Hubble telescope, resulting in some of NASA's most iconic images of deep space [above].
Hester came to Arizona State University in 1990, working as a professor in the Department of Physics for 20 years before taking early retirement at 51 years old.