Tradition 20 of 33
UFOs, extraterrestrials, and contact
UFO/UAP reports, flying saucers, extraterrestrial life, alien contact or abduction, contactees, and ancient-astronaut claims.
Membership means relevance, not endorsement.
- Books
- 1,058
- Earliest
- 1558
- to 2026
- Read free
- 22%
- 236 with public full text
- With covers
- 58%
How books qualify
- Query + metadata match981
- Metadata match69
- Query match7
- Source classification (retained through merging)1
Every placement records its evidence — the controlled subject queries that found the book at its sources and the bibliographic metadata retained through merging. Each book page shows its own. How the rationale system works.
Key subjects
- Fiction324
- Science fiction258
- Extraterrestrial beings247
- Human-alien encounters220
- Unidentified flying objects204
- UFO128
- Alien abduction101
- Short Stories92
- Physical Sciences86
- Social Sciences83
- Astronomy and Astrophysics82
- Physics and Astronomy82
- Life on other planets81
- Children's fiction80
- Sightings and encounters79
- Space Science and Extraterrestrial Life78
- Fiction, science fiction, general77
- Juvenile fiction74
- History69
- Philosophy68
- Psychology68
- Extraterrestrial beings, fiction62
- Social Psychology52
- 未確認飛行物体46
Top languages
- English771 · 73%
- German85 · 8%
- Japanese48 · 5%
- French31 · 3%
- Dutch29 · 3%
Notable authors
All authors- Jacques Vallee14 in this tradition15 books
- Katherine Applegate12 books
- M. de Fontenelle11 in this tradition12 books
- Bernard Le Bovier de Fontenelle9 in this tradition15 books
- Virgil Finlay8 in this tradition12 books
- Ed Emshwiller7 in this tradition11 books
- George Adamski7 books
- Orson Scott Card6 in this tradition8 books
- Pittacus Lore6 in this tradition7 books
- Donald E. Keyhoe6 books
- Marissa Meyer6 books
- Robert A. Heinlein6 books
1,058 books
Paranormal borderlands of science
Kendrick Frazier
1981
Paranormal claims : a critical analysis
Michael Shermer, Stephen Barrett, Barry L. Beyerstein, Susan Blackmore, Geoffrey Dean, Bryan Farha, Ray Hyman, Joe Nickell, Benjamin Radford, James Randi, Linda Rosa, Carl Sagan
2007
Physics of the impossible : a scientific exploration into the world of phasers, force fields, teleportation, and time travel
道雄 加来
2009
Popular Psychology
Luis A. Cordón
2005
Search for the Unknown
Matthew Hayes
2022
Shockingly Close to the Truth : Confessions of a Grave-Robbing Ufologist
James W. Moseley, Karl T. Pflock
2002
Talking about Life
Chris Impey
2010
The Holographic Universe: The Revolutionary Theory of Reality
Michael Talbot, Lynne McTaggart
2011
The Lost Land of LemuriaFabulous Geographies, Catastrophic Histories
Sumathi Ramaswamy
2004
The Penguin book of new age and holistic writing
William Bloom
2001
The Psychology of Public Belief in Unexplained Phenomena
Barrie Gunter
2025
The Science of Weird Shit
Chris French
2024
The UFO chronicles
John Michael Greer
2020
The search for psychic power : ESP & parapsychology revisited
C. E. M. Hansel
1989
Theater of Disorder
Brant Wenegrat
2001
Theory of Everything
Michael Chodounsky
2026
UFO religion
Gregory L Reece
2007
Understanding Beliefs
Nils J. Nilsson
2014
Until the Sun Dies
Robert Jastrow
1977
When Prophecy Never Fails
Diana G. Tumminia
2005
Where Reincarnation and Biology Intersect
Ian Stevenson
1997
Why Delusions Matter
Lisa Bortolotti
2023
Why UFOs
John A. Keel
1970
From Archaeology to Archaeologies: The ‘Other’ Past
Anna Simandiraki‐Grimshaw, Eleni Stefanou
2012