All that incinerated aluminum would be bad news.
Even with those megaconstellations complete, the amount of human-made stuff burning upon reentry into the atmosphere will be considerably outweighed by the amount of space rocks and other natural stuff doing the same. But satellites have a vastly different chemical composition from space rocks, andargues that all of that incinerated aluminum could punch a new hole in the ozone — or even inadvertently geoengineer the planet.
amidst public resistance. But now the exact same thing may happen anyway, as burning aluminum satellites in the atmosphere will likely have a similar effect, University of British Columbia astronomer and paper coauthor Aaron Boley told"Now it looks like we are going to run this experiment without any oversight or regulation," Boley said. "We don't know what the thresholds are, and how that will change the upper atmosphere.
— a risk we know about from seeing rockets burning aluminum-heavy fuels punch tiny holes in the ozone when they launch.Space.com . "There is this perception that there is no way that we can dump enough plastic into the ocean to make a difference. There is no way we can dump enough carbon into the atmosphere to make a difference. But here we are. We have a plastic pollution problem with the ocean, we have climate change ongoing as a result of our actions and our changing of the composition of the atmosphere and we are poised to make the same type of mistake by our use of space.
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