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Search for Extraterrestrial Intelligence, an organization that scans the sky for signs of non-human technology. Study has focused on analysis of the radio spectrum of other stars, but also involves other approaches.

4 votes
2 answers
895 views

Could unexpectedly high levels of interstellar space debris be the Great Filter?

I've heard (though I can't find the source) that sufficiently large interstellar space debris has the potential to destroy spacecraft, and that there is considerable uncertainty about how much of a ri …
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