(Episode 1) — Dr. Scott Parazynski is a former NASA astronaut who flew on five shuttle missions. During his time with NASA he conducted seven spacewalks. Dr. Parazynski is also the only astronaut to summit Mt. Everest. Now, he serves as the first Professor or Practice and University Explorer at Arizona State University. Find Dr. Parazynski on Twitter, he tweets at @astrodocscott.
Photo credit: NASA; Dr. Scott Parazynski