Comment by sandworm101

>> Starship making LEO and testing propellant transfer (a humanity first)

No. We have to stop listing to AI and twitter idiots trying to upsell stories into "firsts". The first propellant transfer, the first refueling of a spacecraft on orbit, was by the soviets nearly 50 years ago.

"Progress 1 was the first of twelve Progress spacecraft used to supply the Salyut 6 space station between 1978 and 1981.[6] Its payload of 2,300 kilograms (5,100 lb) consisted of 1,000 kilograms (2,200 lb) of propellant and oxygen, as well as 1,300 kilograms (2,900 lb) of food, replacement parts, scientific instruments, and other supplies. Whilst Progress 1 was docked, the EO-1 crew, consisting of cosmonauts Yuri Romanenko and Georgi Grechko, was aboard the station. Progress 1 demonstrated the capability to refuel a spacecraft on orbit, critical for long-term station operations.[11] Once the cosmonauts had unloaded the cargo delivered by Progress 1, they loaded refuse onto the freighter for disposal."

https://en.wikipedia.org/wiki/Progress_1

If SpaceX wants a first, then it would be the first transfer of cryogenic fuel. But even that could be debated as arguably Shuttle "transferred" cryogenic fuel between the tank and the orbiter during the launch process. So SpaceX might get the first of (cryogenic + on-orbit). Any simplification is a denial of what has already been done.