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The Fermi Paradox: Searching for Life in the Universe
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There is a number so large… it changes how you see everything. The Milky Way contains an estimated 100 to 400 billion stars. Many of those stars have planets orbiting them. That means there are likely hundreds of billions of planets in a single galaxy. Not the universe. Just one galaxy. Now expand that scale. There are more than 100 billion galaxies in the observable universe. The total number of planets may reach into the sextillions. Among those, some exist in regions where liquid water could be possible. These regions are often called habitable zones. This leads to a central
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