If you've been trying to recall what makes theoretical math super fun, here's a reminder. Researchers from the University of Edinburgh published a paper in the International Journal of Astrobiology that examines how long it would take Voyager-sized probes to bop around the Milky Way and eventually encounter our solar system. The answer is not that long! Especially if the probes are using gravitational slingshotting and especially if they're self-replicating.
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