SpaceX, Crew-11 rocket launch scrubbed over weather NASA and SpaceX delayed the Crew-11 launch to the ISS at T-minus one minute before liftoff on July 31 due to cloud cover violating weather safety criteria. The Brief NASA and SpaceX delayed the Crew-11 launch to the ISS at T-minus one minute before liftoff on July 31 due to cloud cover violating weather safety criteria. The next launch opportunity is scheduled for Friday, August 1, at 11:43 a.m. EDT from Launch Complex 39A at Kennedy Space Center in Florida. Crew-11 will send four astronauts on a six-month ISS mission to support scientific research, technology demonstrations, and preparations for future deep space exploration. MERRITT ISLAND, Fla. - NASA and SpaceX have delayed Thursday’s planned launch of the Crew-11 mission to the International Space Station (ISS). Why was the Crew-11 launch scrubbed? What we know: Officials called off the launch at T-minus one minute due to cloud cover, just before liftoff from Launch Complex 39A at Kennedy Space Center in Florida. Watch the video below to see the moment the launch was called off.