NASA says 22 Starship flights are needed for orbital refueling to do Artemis IV moon mission, while Elon says 6-8. I’m curious where NASA gets their estimates, as Precourt seems particularly concerned about mission success due to the high number of orbital refuelings. Without other information, I’m taking Elon’s estimates over NASA’s. He talks with SpaceX weekly, so either something is drastically off or NASA is using old V1-V2 numbers from years ago.