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
- 1,014
- Earliest
- 1687
- to 2026
- Read free
- 20%
- 201 with public full text
- With covers
- 56%
How books qualify
- Query + metadata match938
- Metadata match68
- 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
- Fiction319
- Science fiction255
- Extraterrestrial beings242
- Human-alien encounters220
- Unidentified flying objects200
- UFO127
- Alien abduction100
- Short Stories92
- Physical Sciences86
- Social Sciences83
- Astronomy and Astrophysics82
- Physics and Astronomy82
- Life on other planets79
- Space Science and Extraterrestrial Life78
- Children's fiction77
- Fiction, science fiction, general77
- Sightings and encounters77
- Juvenile fiction72
- History68
- Philosophy67
- Psychology67
- Extraterrestrial beings, fiction60
- Social Psychology52
- 未確認飛行物体46
Top languages
- English752 · 74%
- German80 · 8%
- Japanese48 · 5%
- Dutch29 · 3%
- Italian21 · 2%
Notable authors
All authors- Jacques Vallee14 in this tradition15 books
- Katherine Applegate11 books
- Virgil Finlay8 in this tradition12 books
- Bernard Le Bovier de Fontenelle8 in this tradition11 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
- 南山, 宏5 in this tradition9 books
1,014 books
Proces aux OVNI
Antonio Ribera Jorda
1975Italian
Strategic Investments in Instrumentation and Facilities for Extraterrestrial Sample Curation and Analysis
2019
UFO la realta nascosta
Luciano Boccone
1980Italian
UFO: operazione cavallo di Troia
John A Keel
1976Italian
Vliegende schotels
Augusto Pedrazza
1953Dutch
Vliegende schotels
1988Dutch
Vliegende schotels
Jijé
1956Dutch
Vliegende schotels een ernstige zaak?
Frank Edwards
1967Dutch
Vliegende schotels en dodende stralen
Jean Biehler
1963Dutch
Vliegende schotels in actie
Harold Tom Wilkins
1955Dutch
Vliegende schotels slaan ons gade
Donald E Keyhoe
1954Dutch
[Fotosammlung]
Lou Zinsstag
1975German
[Zeitungsartikel über Ufos]
Lou Zinsstag
1952German
アフター・アウトゼア
Armen Victorian, 礒部, 剛喜, 日本宇宙現象研究会
1995Japanese
アポロと空飛ぶ円盤
平野, 威馬雄, 荒井, 欣一
1969Japanese
宇宙からの来訪者
Hon. Brinsley Le Poer Trench, 岡部, 宏之
1977Japanese
宇宙人との遭遇
Wendelle C Stevens, 芝田, 康彦
1980Japanese
宇宙人と古代人の謎
Aleksandr Petrovich Kazantsev, 金光, 不二夫
1978Japanese
宇宙人についてのマジメな話
平野, 威馬雄
1974Japanese
宇宙人はすぐそばにいた!「地球を訪れた宇宙人」の真相がわかる本
2017Japanese
現代日本における「オカルト」の浸透と海外への伝播に関する文化研究
一柳, 広孝, 横浜国立大学
2008Japanese
赤い国のエイリアン
中村, 省三
1990Japanese
Space, fact and fiction
Mollie Bowen
1972
4 UFO-Erlebnis-Berichte, die den jetzigen Stand der Ufologie kennzeichnen
Anny Baguhn
[19--]German