4 ms·

I wish this article had also gone into how long indicators might survive outside of Earth. Could satellites survive? Things on moon or Mars? Might we go to Mars

I wish this article had also gone into how long indicators might survive outside of Earth. Could satellites survive? Things on moon or Mars? Might we go to Mars and find some old Mars Rover or underground base or that we left Mars for Earth after we made it uninhabitable? Edit: typo has -> had

mr_toad 9y ago
Anything on the surface will be eroded by micometeorites over millions of years. The lunar surface is a layer of dust several meters thick that is the product of that erosion. Underground artefacts might survive longer, since there is no plate tectonics and little other geological activity, but finding them would be difficult.