Former NASA astronaut Scott Parazynski (with five missions under his belt) has done A LOT. He's climbed to the summit of Mount Everest (the first person to make it there and into space), competed as an Olympic-level luger, and started his own machine-body interface company (just to name a few--seriously, this guy will make you feel bad about your life decisions). He stopped by PCMag's offices to talk about the future of humans in space and his new memoir The Sky Below.

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