Space Junk Is Polluting Earth's Stratosphere with Vaporized Metal
Defunct satellites and other pieces of orbital debris are pumping metals into Earth’s fragile upper atmosphere, with effects unknown
![Space Junk Is Polluting Earth's Stratosphere with Vaporized Metal](https://static.scientificamerican.com/sciam/cache/file/8E5AE71C-1A01-46D5-B48F8AFCB44186C5_source.jpg?#)
Defunct satellites and other pieces of orbital debris are pumping metals into Earth’s fragile upper atmosphere, with effects unknown
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