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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.

6 votes

How likely are atomic bomb tests to be detectable by human-equivalent extraterrestrial life?

The correct question might not be: "Are the tests detectable?" (since we don't know the capabilities of possible alien civilizations) but rather "How detectable were the tests compared to other human …
antlersoft's user avatar
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3 votes

How obvious would an Earth-like planet be when searching for signs of life in space?

The vast majority of earth-sized planets orbiting sun-like stars at earth-like distances would be impossible to detect with current technology even if the host star was relatively close to us. The fac …
antlersoft's user avatar
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