UFOs and the Fermi Paradox. If someone is out there, then where are they? Podcast Por  arte de portada

UFOs and the Fermi Paradox. If someone is out there, then where are they?

UFOs and the Fermi Paradox. If someone is out there, then where are they?

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Andrew Fraknoi is a professor of astronomy who wonders if we are alone. And if not, where are they?

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