Pale Blue Dot: A Vision of the Human Future in Space

Why is it difficult to detect intelligent life on Earth?

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Asked by Cat on 07 Oct 03:11

Last updated by Cat on 07 Oct 03:11

1 Answers

Answered by Cat on 07 Oct 03:11

It is difficult to detect intelligent life on Earth because either a very high resolution visual inspection of the planet must be made, or a fairly limited band of the electromagnetic spectrum must be examined for radio waves.