Lots of things can go wrong during a commercial spaceflight -- especially once your capsule leaves space. An unplanned ocean landing is just one of those worst-case scenarios.
Brien's lunar training often puts him in situations where gravity, as we Earthlings know it, doesn't exist.
Welcome to a new series dedicated to Brien's spaceflight endeavors. For his inaugural post, Brien answers some of your most common questions, from what exactly he's training for to what's the deal with that human-sized centrifuge.