NASA and SpaceX's Crew-11 mission is made up of two U.S. astronauts, one from Japan and a Russian cosmonaut. They'll be aboard the International Space Station for six months conducting research.

On August 1, SpaceX launched its 11th crew rotation for NASA. The four will spend six to eight months on the International Space Station.

SpaceX is back one day after a weather-related scrub to send the Crew-11 mission to the International Space Station. A Falcon 9 rocket topped with the Crew Dragon Endeavour is slated to lift off from KSC's Launch Pad 39-A at 11:43 a.