• AwesomeLowlander@lemmy.dbzer0.com
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    14 days ago

    Have yet to see any of these ‘studies’ take into account and compare with natural meteorite effects, which are orders of magnitude larger than the satellites.

    • spidermanchild@sh.itjust.works
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      14 days ago

      Are you just doing the thing where you cast doubt on journal articles because they feel wrong? You don’t think humans can affect the natural environment in such a way? This sounds oddly familiar and a bit ironic for this community…

      Meteors aren’t made out of aluminum like satellites are btw. There will be more reasearch done and we will learn more. But for now, there’s a potential issue.

      https://phys.org/news/2024-06-satellite-megaconstellations-jeopardize-recovery-ozone.amp

    • ValenThyme@reddthat.com
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      14 days ago

      Niobium and hafnium do not occur as free elements in nature, but are refined from mineral ores. They are used in semiconductors and superalloys.

      In addition to these two unusual elements, a significant number of particles contained copper, lithium and aluminum at concentrations far exceeding the abundance found in meteorics, or ‘space dust.’ “The combination of aluminum and copper, plus niobium and hafnium, which are used in heat-resistant, high-performance alloys, pointed us to the aerospace industry,’’ Murphy said.

      source

      they are finding elements that don’t even occur in nature, and elements that do occur but in proportions in the atmosphere that have grown significantly since we started burning up rockets.

      Armchair scientists don’t seem to give actual scientists much credit.

      • Kalcifer@sh.itjust.works
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        13 days ago

        they are finding elements that don’t even occur in nature

        Neither of your referenced quotes claimed that the elemental makeup of the measured particulate was synthetic. If you are referring to “Niobium and hafnium do not occur as free elements in nature”, what this means is that the elements are not ever found on their own — they have only ever been found bonded to something else. Niobium makes up 0.0017% of Earth’s crust and Hafnium makes up 0.00033% [source (archive)].

    • Kalcifer@sh.itjust.works
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      13 days ago

      Hm, while the presence of the elements in question in the atmosphere could be naturally occurring, what’s important to consider for this discussion is the rate of their increase. If there’s an increase in the problematic particulate in the atmosphere that correlates with an increase in the atmospheric burn up of artificial satellites with no related increase in the rate of meteors, then its likely that the artificial satellites were indeed the culprit.