The Profile Dossier: Scott Kelly, the Astronaut Preparing Humanity for Mars

"Going to Mars is doable. We're close enough that if we make the choice, I think we can do it."

As a complement to the regular Sunday newsletter, the Profile Dossier is a comprehensive deep-dive on a prominent individual. The dossier editions are only available to paying subscribers.

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Scott Kelly spent a record-setting 340 consecutive days in space, the single longest space mission by an American astronaut.

Part of Kelly's year-long mission in orbit…