Why when we look into the stars do we not see a sign of life anywhere else? Has life not emerged yet or has it wiped itself out? With what? Nukes? AI? Synthetic viruses made with AI? Who knows…

entertaining this awful sci-fi schtick for a moment - if every civilization is wiped out by "superintelligent AI", how come you can't look through a telescope and see signs of artificial life? in this fantasy world shouldn't planets taken over by paperclip factories be even more conspicuous?