The Falcon 9 rocket and Crew Dragon spacecraft roll to pad 39A during its first test flight in February. Credit: NASA/Joel Kowsky Today, American astronauts will launch on a rocket from American soil to the International Space Station, marking a new era of human spaceflight. NASA astronauts Robert Behnken and Douglas Hurley, chosen for their experience on several previous missions on the space shuttle and extensive test pilot and flight experience, will fly on SpaceX’s Crew Dragon ...