In a micrometeorite environment, they'll last a million years at most. All that ...

TheOtherHobbes on June 27, 2020 | parent | context | favorite | on: Silurian Hypothesis: Were There Civilizations on E...

In a micrometeorite environment, they'll last a million years at most. All that will be left after a million years is a curious and anomalous concentration of metallic particles. After a billion years it will be buried and very easy to miss.

hutzlibu on June 27, 2020 [–]

And probably hard to distinguish from a old meteor with the right metal combination.