Meet the astronauts flying on NASA's SpaceX Demo-2 mission

NASA astronauts Bob Behnken and Doug Hurley will be the first humans to launch from American soil since the retirement of the Space Shuttle in 2011. They will be launching aboard a SpaceX Crew Dragon spacecraft atop a Falcon 9 rocket. -- Astronauts perform one last dress rehearsal for big SpaceX launch next week: https://www.space.com/astronauts-rehearse-spacex-crew-dragon-demo-2-launch.html Credit: NASA