Was there someone here before us? (science video)

In this hour-long science documentary video, Jason Wright joins John Michael Godier to explore unusual technosignatures from alien civilizations.

Looking for red spirals, dyson spheres, and other signs of intelligent life within the universe. The idea of prior technological civilizations existing either on ancient venus, mars, or even earth is explored.

Would they be aliens if they came from earth then left?

Was there someone here before us?
Was there someone here before us?

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