During his early days at college, Feustel worked as an auto mechanic. The skills acquired probably helped him in the challenging STS-125 mission, the fifth and final Hubble Space Telescope servicing mission. The mission extended and improved the observatory’s capabilities.
In completing his first mission, Feustel logged almost 13 days in space, and about 20 hours in three spacewalks. The spacewalkers overcame frozen bolts, stripped screws and stuck handrails.
Following several years working as a geophysicist, Feustel was selected as an astronaut candidate by NASA in July 2000.