NASA astronauts Shannon Walker, left, Victor Glover, second from left, Mike Hopkins, second from right, and Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi, right, wearing SpaceX spacesuits, stop to pose for a picture as walk out of the Neil A. Armstrong Operations and Checkout Building to depart for Launch Complex 39A during a dress rehearsal prior to the Crew-1 mission launch, on Nov. 12, 2020, at NASA's Kennedy Space Center in Florida. Photo: VCG

NASA and SpaceX launched Crew Dragon spacecraft's first operational crew mission on Sunday, carrying four astronauts to the International Space Station.