3 ms·

> It's what, 15 aeroplane flights' worth? Try a single aeroplane?

• markonen 5y ago
  For just the fuel, yeah, but the expendable second stage adds a lot of impact.
  • mlindner 5y ago
    How so? https://en.wikipedia.org/wiki/Micrometeorite#Introduction https://en.wikipedia.org/wiki/Micrometeorite#Introduction > An estimated 40,000 ± 20,000 tonnes per year (t/yr) of cosmic dust enters the upper atmosphere each year of which less than 10% (2700 ± 1400 t/yr) is estimated to reach the surface as particles.
    • paranoidrobot 5y ago
      The thread is about CO2 emissions. The entire total carbon emissions of producing and flying the second stage is non-trivial.
      • mlindner 5y ago
        > The thread is about CO2 emissions. I agree, but the post I was responding wasn't talking about CO2 emissions.