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
Abducted!
Debbie Jordan, Kathy Mitchell
1994
Abductions & aliens
Chris A. Rutkowski
1999
Agent to the Stars
John Scalzi
2005
Alien Abductions
Peter Brookesmith
1998
Alien Contact
Marty Halpern, Neil Gaiman, Stephen King, Orson Scott Card, Cory Doctorow, Ursula K. Le Guin, Paul McAuley, Karen Joy Fowler, Harry Turtledove, George Alec Effinger, Pat Murphy, Mike Resnick, Bruce McAllister, Ernest Hogan, Pat Cadigan, Adam-Troy Castro, Michael Swanwick, Mark W. Tiedemann, Elizabeth Moon, Nancy Kress, Jack Skillingstead, Robert Silverberg, Jeffrey Ford, Molly Gloss, Bruce Sterling, Charles Stross, Stephen Baxter
2011
Alien abduction
Brian M. Stableford
2009
Alien abductions
Martin H. Greenberg, John Helfers
1999
Alien rapture
Edgar Rothschild Fouché
1998
Aliens among us
Ruth Shick Montgomery
1985
An alien harvest
Linda Moulton Howe
1989
Ancient astronauts, cosmic collisions, and other popular theories about man's past
William H. Stiebing
1984
And Another Thing…
Eoin Colfer
2009
Armada
Ernest Cline
2015
Axis
Robert Charles Wilson
2007
Babylon’s ashes
James S. A. Corey
2016
Beyond Earth
Ralph Blum
1974
Binti
Nnedi Okorafor
2015
Board Stiff (Xanth)
Piers Anthony
2013
Caliban's war
James S. A. Corey
2012
Captured! - the Betty and Barney Hill UFO Experience
Stanton T. Friedman
2007
Chocky
John Wyndham
1968
Chthon
Piers Anthony
1967
Close Encounters of the Fourth Kind
C. D. B. Bryan
1995
Coevolution
Alec Newald
1997