interesting. I knew it was hydrazine in the thrusters. Couldn’t recall the main motors’ fuel.
ZERO ‘pollution’ using H2. Ya just make water vapor. Oh wait, THE *MOST* powerful greenhouse gas is water vapor ;-)
Except the H2 is made by steam reforming Natural Gas.
Nobody has found an H2 tree for harvesting zero pollution fuel.
It is like claiming an Electric Car is zero pollution by ignoring most of the Electricity is made from Coal and Natural Gas.