evidence: Falcon 9 is also used to send NASA astronaut missions to the ISS aboard SpaceX's Crew Dragon spacecraft. The next scheduled effort, known as Crew-9, was supposed to send four astronauts aloft in mid-August. The group will relieve Crew-8, which has been on the ISS since March for what was expected to be about a half-year mission. [...] "SpaceX has an incredible track record with Falcon 9. I can say from personal experience they are very transparent when issues arise," Isaacman said in a post on X, formerly Twitter, last week. "I have no doubt they will arrive at a cause quickly and ensure the most cost-effective and reliable launch vehicle keeps delivering payload to orbit. As for Polaris Dawn, we will fly whenever SpaceX is ready and with complete confidence in the rocket, spaceship and operations."