We won’t know until we have proof. We can only guess and assume what the signals might be.
Entire civilizations may have skipped radio etc. Biological, straight to light, targeted signals or other alternatives we can’t detect.
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We won’t know until we have proof. We can only guess and assume what the signals might be.
Entire civilizations may have skipped radio etc. Biological, straight to light, targeted signals or other alternatives we can’t detect.