"But be patient with us. Let's make sure that the vehicle is ready to go and that our team is really certain before we hit the button."

A Pennsylvania astronaut will pilot the Crew-11 mission, a joint venture between NASA and SpaceX, which will be livestreamed on Netflix.

Four more astronauts are launching to the International Space Station (ISS) on July 31. The liftoff is scheduled at 9:39 pm IST atop SpaceX 's Falcon 9 rocket from NASA 's Kennedy Space Center. On Tuesday, SpaceX completed a static fire test of the Falcon 9 rocket after the crew completed a full dress rehearsal of launch day activities.