Today's best telescopes could see the amount of light produced by Tokyo from as far away as the Kuiper Belt
. Future telescopes may be able to hunt for alien civilizations by looking for artificial lighting. (Via Gary King) — Maggie
Don’t muck around in the affairs of planets that are less technologically advanced than yours. Despite how often it gets ignored, Star Trek‘s Prime Directive is a pretty nice attempt to take a universe brimming with life and figure out how to interact with it in an ethical way.
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