From: The Cosmic Census: Is Earth Alone in the Universe?
perspectiveFermi Paradox Explanations

The Fermi Paradox asks: if extraterrestrial life is common, where is everybody? Explanations range from the 'Great Filter' (a bottleneck preventing life from becoming advanced), to the idea that advanced civilizations might be too far away, too different, or intentionally avoiding contact (zoo hypothesis), or that they simply don't last long.

controversy

Supporting arguments

  • Lack of detected signals or physical evidence.
  • Vast distances and light travel time.
  • Potential self-destruction of advanced civilizations.
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The Cosmic Census: Is Earth Alone in the Universe?
Evidence, perspectives, rabbit holes, and more