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Re:SpaceX Crew Dragon Splashes Down After Historic Test Flight by lutorm on Friday March 08, 2019 @08:32PM (#19343906)
World CO2 emissions last year was ~ 37Gigatons of carbon. A F9 launch uses of order 100 tons of RP1, so global emissions correspond to about 370 million launches...
Re:SpaceX Crew Dragon Splashes Down After Historic Test Flight by p1mrx on Friday March 08, 2019 @10:29PM (#19344262)
Note that 1 ton of fuel yields more than 1 ton of CO₂: https://www.fueleconomy.gov/feg/contentIncludes/co2_inc.htm

(Though it's still comparable in "order of magnitude" terms.)