Probably a stupid question but if rocket launches really became as commonplace as airplane flights, would we see some kind of increase in global temperatures?
But this is an insane scenario because there are about 100,000 commercial flights per day in the world. In all of 2024 there were ~250 orbital launches. So to hit the same rate as airplanes it would require a ~150,000x increase in the launch rate (or a ~15,000x increase to equal the CO2 emissions of airplanes).
The 737 is a much smaller plane, and its fuel capacity is near the ballpark of 10x smaller.
Of course the reality is that this tech won't ever see adoption used that widely, but where is the break-even point?
I think what they were trying to get at is GHG emissions in general which there are more of than just CO2.
Starship's operations in Boca Chica do emit methane during ground operations. The mitigation for that is to use a pipeline rather than trucks for delivery.
Solid rocket motors emit all sorts of nasty stuff, like aluminum particles.