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Replying to Avatar iefan 🕊️

I once heard an astrophysicist explain why we haven't seen aliens.

He suggested three possible reasons:

First, aliens may not exist;

Second, intergalactic travel could be too difficult, and no civilization has evolved enough for it;

Third, the most frightening possibility is that they are all hiding from each other or from someone even more dangerous, and any exposed alien civilization gets destroyed.

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Generalist 2y ago

Or, they existed/will exist before/after mere existence of our galaxy.

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