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Time to Give SETI a Chance?

• arclein
Answering that question will be hard. It is quite probable that Earth 2.0 will be hundreds or even thousands of light years away; too far from us to detect trace chemical "biosignatures" that would suggest life. There is another way. We could look for life on Earth 2.0 via "technosignatures" such as radio signals produced by intelligent life. These would be cheaper and easier to find than biosignatures. It is a long shot, but one that is affordable and we can do it now. In fact t

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