Advertisement3 Astronauts Walk Into NPR ...September 15, 2015Laura WagnerfacebookEmailEllen Stofan (from left), chief scientist of NASA, and astronauts Samantha Cristoforetti, Serena Auñón and Cady Coleman. (NPR)
Ellen Stofan (from left), chief scientist of NASA, and astronauts Samantha Cristoforetti, Serena Auñón and Cady Coleman. (NPR)