Stephen Webb's book 'If the Universe Is Teeming with Aliens Where Is Everybody?' categorizes 75 explanations for the Fermi paradox into three groups: extraterrestrials are or were here, extraterrestrials exist but have not been detected, or extraterrestrials do not exist.

Authors

• Person: Not available Organization: We Are Not Saved
  The Great Silence (Philosophy and Fermi's Paradox)

Sources

• The Great Silence (Philosophy and Fermi's Paradox) www.wearenotsaved.com We Are Not Saved via serper

Referenced by nodes (1)

• Fermi paradox concept