For what it's worth, Spacex's next generation rocket burns methane directly, into CO2 which is a less potent greenhouse gas. That means that if solar power is

For what it's worth, Spacex's next generation rocket burns methane directly, into CO2 which is a less potent greenhouse gas. That means that if solar power is used to create methane from the CO2 in the atmosphere, then the rocket will be carbon neutral. And if waste methane is used (commonly vented to atmosphere because the market is small yet it is expensive to capture) then each launch will actually be a net benefit for reducing atmospheric greenhouse gases.