Well known for his space videos, tweets and sage wisdom, Canadian Chris Hadfield was commander of ISS Expedition 35, and flew two shuttle missions.
As a child, he watched the Apollo 11 mission and decided to become an astronaut. With relentless focus, and some good fortune, he became an engineer, fighter pilot and . . .eventually an astronaut.
His warm personality and good communication skills helped him share the joy and challenges of life on ISS, with millions world-wide. He authored 2 exceptional books: An Astronaut's Guide to Life on Earth, and You Are Here! A long-time guitar player, he also created a space-based rendition of David Bowie's "Major Tom", widely seen on YouTube, but sadly no longer available.