The Panspermia Hypothesis and the Fermi Paradox

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What is the Panspermia Hypothesis?

  1. The idea that life on Earth originated from extraterrestrial sources.
  2. The idea that life on Earth originated from a single common ancestor.
  3. The idea that life on Earth originated from multiple independent origins.
  4. The idea that life on Earth originated from a combination of extraterrestrial and terrestrial sources.
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