The Fermi Paradox: Galactic Habitable Zones
Science & Futurism with Isaac Arthur
00:00
The Fermi Paradox of Life on Earth
Our current lead theory for the origin of life here on earth is that it formed deep in the ocean well shielded from very powerful radiation sources and photosynthesis took quite a while to evolve. In that context it should hardly matter if a planet was in some cluster of stars where a supernovae and x-ray bursts were common or if it is orbit around the galactic core of many millions of years swimming through such places occasionally. But fundamentally the fermi paradox isn't about where life can exist, it's where life can plausibly evolve to leave a visible and enduring mark on the galaxy which we might detect. Hopefully in the next few decades we'll be able to start spotting biosensors
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