The second stage of SpaceX’s Falcon 9 rocket is being loaded with liquid oxygen, and everything remains on track for a targeted 3:52 a.m. EDT liftoff. Inside the Crew Dragon spacecraft are NASA astronauts Kjell Lindgren, Robert Hines, and Jessica Watkins, and ESA (European Space Agency) astronaut Samantha Cristoforetti. Lindgren and Cristoforetti have previously traveled to the International Space Station, while it will be the first trip for Hines and Watkins.