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A comment on Model predicts we're the only advanced civilization in the observable universe. Parent comment

Re:Model predicts we're the only advanced civilization in th... by ars on Monday June 25, 2018 @01:23PM (#17394061)
You forgot about radar. Our current radar produces signals that are very very easy to see from incredible distances.

But, I'm not sure if the signals will appear to be from intelligence though.

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