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A comment on One to two Starlink satellites are falling back to Earth each day. Parent comment

Re:One to two Starlink satellites are falling back to Earth ... by everforward on Monday October 06, 2025 @02:41PM (#45494710)
There is almost definitely a small, negligible amount of lead in the solder in them. Eg NASA requires a small (single digit I think) percentage of lead to prevent tin whiskering.
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Re:One to two Starlink satellites are falling back to Earth ... by JumpCrisscross on Monday October 06, 2025 @03:23PM (#45495224)
> almost definitely a small, negligible amount of lead in the solder in them

Emphasis on negligible. Assuming 0.07 to 0.28 ppm lead [1] in meteoroids, space is dosing us with half to 2 kg a year [2].

[1] https://www.sciencedirect.com/science/article/abs/pii/001670...

[2] https://earthsky.org/space/tons-of-extraterrestrial-dust-fal...

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