4 ms·
Earth receives ~50,000 kg/day of cosmic dust (our mid-range assumption), 30 kg is 0.06% of that daily amount.
by mensetmanusman 1y ago
Earth receives ~50,000 kg/day of cosmic dust (our mid-range assumption), 30 kg is 0.06% of that daily amount.
- burnt-resistor 1y agoBut how much of that is aluminum? Probably <0.5%. Nit: You're off by about a factor of 3 because it's 14.6 t/day. https://www.scientificamerican.com/article/antarctic-study-shows-how-much-space-dust-hits-earth-every-year/ https://www.scientificamerican.com/article/antarctic-study-s...
- lithocarpus 1y agohttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2020JA028792 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/202... Apparently around 1.4%. So the starlink satellites dissipating could increase the aluminum oxide arriving up there by ~10% - depending which numbers are correct I suppose it could be anywhere from like 3-30%.
- a_bonobo 1y agoThis is kind of that 'climate change skeptic' argument that CO2 is only a tiny percentage in the atmosphere, 0.04%, so anything humans have done to that tiny percentage is therefore negligible. But we've had a massive impact by increasing that tiny percentage by 50% causing climate change.