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Q&A Why can't our self-replicating message in a bottle stay in Sol?

Suppose we knew of an extinction level event in a few decades, and through a large Manhattan Project-type effort humanity manages to construct a von Neumann probe with a copy of all human knowledge...

4 answers  ·  posted 5y ago by Jay Lemmon‭  ·  last activity 5y ago by Jay Lemmon‭