A SpaceX crew of four astronauts, including NASA's Zena Cardman and Mike Fincke, launched to the International Space Station on Friday. This mission replaces astronauts whose return was delayed due to issues with Boeing's Starliner spacecraft. The crew will spend at least six months on the ISS, potentially extending to eight months to save costs. NASA is also considering smaller crew sizes for future SpaceX missions, while continuing to investigate Starliner's problems before its next flight.

Prepared by Olivia Bennett and reviewed by editorial team.