nemeciii , 
Megaconstellations like Starlink will increase atmospheric aluminum oxide amounts to 646% over natural levels ( +360 metric tons / year ).
It will take up to 30 years for the aluminum oxides to drift down to stratospheric altitudes, where 90% of Earth's ozone is located.
Once there aluminum oxide will act as a catalyst with chlorine harming the ozone layer.
https://phys.org/news/2024-06-satellite-megaconstellations-jeopardize-recovery-ozone.html
