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Marc Defant – Where Are All the Aliens?

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Marc Defant discusses the apparent lack of evidence for extraterrestrial life in our solar system, the wider galaxy, and the entire observable universe.

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The Fermi Paradox states the situation as follows: There are billions of stars in the Milky Way similar to the Sun. With high probability, some of these stars have Earth-like planets. Many of these stars, and hence their planets, are much older than the sun. If the Earth is typical, some may have developed intelligent life long ago. Some of these civilizations may have developed interstellar travel, a step humans are investigating now. Even at the slow pace of currently envisioned interstellar travel, the Milky Way galaxy could be completely traversed in a few million years. And since many of the stars similar to the Sun are billions of years older, the Earth should have already been visited by extraterrestrial civilizations, or at least their probes. However, there is no convincing evidence that this has happened. So the question is: Where are all the aliens?

Bumper music: Cliff Martinez ‘Traffic OST’
Dionysiac ‘Iota Ceti Contact’

First half free - subscribe to hear the second half

Download this show (31.1MB)


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