Episode Notes When NASA was looking for its first astronauts, they searched among the square-jawed pilot set. As we gear up to travel to Mars, what kind of astronauts and skillsets are they looking for? Guest: Erin Berger, freelancer writer and author of “ The Perfect Astronaut Is Changing ” for the Atlantic. This episode is member-exclusive. Listen to it now by subscribing to Slate Plus. By joining, not only will you unlock exclusive episodes of What Next TBD—you’ll also access ad-free