Dr. J.A. Hynek coined the term 'Close Encounters' and introduced a sixfold system of classification based on proximity in his 1972 book, The UFO Experience: A Scientific Study.

Authors

• Person: Lilian Tsappa Organization: Scientific Research Publishing
  Anomalous Aerial Phenomena, Abductions, and Mysterious ...

Sources

• Anomalous Aerial Phenomena, Abductions, and Mysterious ... www.scirp.org Lilian Tsappa · Scientific Research Publishing via serper

Referenced by nodes (1)

• close encounter concept