Milan Ćirković quotes Nikolai Kardashev as stating that "extraterrestrial civilisations have not been found because they have not really been searched for."

Authors

• Person: Milan Cirkovic Organization: CERN Courier
  The Great Silence – The Science and Philosophy of Fermi's Paradox

Sources

• The Great Silence – The Science and Philosophy of Fermi's Paradox cerncourier.com Milan Cirkovic · CERN Courier via serper

Referenced by nodes (1)

• Milan Ćirković entity