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Oliver Schick
Some rockets can be propelled by liquid hydrogen + oxygen producing plain old water. You can generate hydrogen and oxygen by electrolysing water with solar or wind power. So that'd be perfectly renewable and zero carbon (excluding the building of various parts of the system).
Satellites etc. are surely worth their CO2 cost anyway. We're better off with a communications satellite or a CO2-measuring satellite than some dudes jetting off on holiday.