NASA 9.91M subscribers NASA and SpaceX now are targeting no earlier than 3:52 a.m. EDT Wednesday, April 27, for launch of the agency’s SpaceX Crew-4 mission to the International Space Station from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. NASA astronauts Kjell Lindgren, Bob Hines, and Jessica Watkins, as well as ESA (European Space Agency) astronaut Samantha Cristoforetti, will launch aboard a Crew Dragon spacecraft atop a SpaceX Falcon 9 rocket.