NASA and SpaceX have postponed the launch of the Crew-13 mission, which was scheduled to send four astronauts to the International Space Station (ISS) in mid-September. The delay was announced on August 29 after an oxidizer leak was discovered in the propulsion system of the Dragon spacecraft during standard prelaunch processing. Teams are currently reviewing data and conducting additional tests to ensure the spacecraft is ready for the journey, but NASA has not yet set a new launch date.