re: #50 JC1

This seems like nonsense. These satellites are pretty small. Even 12k of them shouldn’t make a dent.

As noted in the article, “more than 350 tonnes of aluminium oxides will be released each year.”

So > 350,000 kg of aluminum oxides per year.

The authors are pretty clear that they think this amount of aluminum oxides per year in the upper atmosphere will set off chemical reactions that will do in the ozone.