This year 171 Starlinks have reentered injecting >5t of aluminum oxide into our atmosphere which is ~33% more Al₂O₃ added to our atmosphere than from meteorites. That number is projected to increase to 640%! "It adds up to a giant uncontrolled experiment in atmospheric chemistry. Researchers already know that aluminum oxides can destroy ozone in a complex series of steps involving Al₂O₃, HCl, AlCl₃, sunlight, Cl, & O₃. Other side-effects may reveal themselves in time."

https://spaceweather.com/archive.php?view=1&day=28&month=04&year=2026