I’d guess that even in the higher orbits the manmade materials will eventually fall down or spin away over the span of a few hundred thousand years. Even if it is currently in a perfect locked orbit, there will be some amount of mass loss over time that will alter the orbit. But I’m no physicist, so i easily could be wrong
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A lot of that will eventually make its way back down to earth.
Some will still be there, especially in higher orbits, but the majority will eventually see orbital decay.
I’d guess that even in the higher orbits the manmade materials will eventually fall down or spin away over the span of a few hundred thousand years. Even if it is currently in a perfect locked orbit, there will be some amount of mass loss over time that will alter the orbit. But I’m no physicist, so i easily could be wrong