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@futurebird 1. I don't know if a non-populated planet could encounter the problem we are at risk of because I assume (?? ??? ??) that relatively lightweight, relatively pure metal structures will behave differently from rocks.

2. I strongly suspect (?) some of the rings in the solar system would be detrimental to satellites. Wikipedia says planetary rings in the solar system are made of "dust" but the particles of that "dust" range in sizes up to the size of a terrestrial house.