Why are Elon Musk’s Starlink satellites burning up in the skies?A mass retirement of first-generation Starlink satellites is resulting in the burning up of up to five space capsules daily, ringing alarm bells over atmospheric pollution...
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Polluting the atmosphereThe steady rate of crashing spacecraft has raised concerns among environmentalists about atmospheric pollution.
The current V2 Starlink satellite version weighs approximately 800 kilograms at launch, almost three times heavier than the older generation satellites that weighed 260 kilograms each.
Each Gen1 Starlink satellite produces, during its incineration, about 30 kilograms of aluminium oxide, a compound known to deplete the ozone layer, an atmospheric shield that protects life on Earth from the sun’s harmful ultraviolet radiation.
The disintegration of satellites is also known to create “metallic vapours” in the atmosphere. The chance of debris hitting an aircraft is “very low”, even though the possibility of uncontrolled space rocket junk disrupting flights cannot be ruled out.
A 2023 study found that 10 percent of aerosols - small particles suspended in the atmosphere - collected 60,000 feet over Alaska contained aluminium and other metals produced by the satellite burn-up.
The presence of these compounds increased eightfold between 2016 and 2022, with the recent surge further exacerbating the level of pollution.
The study proved for the first time that stratospheric pollution is “unquestionably linked to (the) re-entry of space debris” into the atmosphere.
The aerosols contained niobium and hafnium - which do not exist as free elements in nature - that are used in semiconductors and superalloys.
In addition to these two unusual elements, a significant number of particles also contained copper, lithium and aluminium at concentrations “far exceeding” the abundance found in meteorics or space dust, the study showed.
https://www.trtworld.com/magazine/why-are-elon-musks-starlink-satellites-burning-up-in-the-skies-18262620Looks like Elon Musk and his company are guilty of large scale, potentially dangerous pollution with no end in sight. I have not used Starlink yet, have you?