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© 2026 2manybooks. All rights reserved. All book values provided are estimates only and are intended for general informational purposes. Such values may vary based on market conditions, item condition, provenance, and other factors, and should not be relied upon as definitive or current valuations. No representation or warranty, express or implied, is made regarding the accuracy or completeness of these estimates. For an accurate, current, and authoritative valuation, users should consult a qualified professional appraiser.

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Username

@ufo

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#1 in Theory

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1 week ago

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Rank#1 in Theory
Updated1 week ago
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UFOs: Generals, Pilots, and Government Officials Go on the Record cover
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Like94
Rating4.8
#052

UFOs: Generals, Pilots, and Government Officials Go on the Record

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Close Encounter at Kelly and Others of 1955 cover
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Like48
Rating4.4
#051

Close Encounter at Kelly and Others of 1955

by
The Pentagon's Brain: An Uncensored History of DARPA, America's Top-Secret Military Research Agency cover
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Like90
Rating4.4
#050

The Pentagon's Brain: An Uncensored History of DARPA, America's Top-Secret Military Research Agency

by
Encounters cover
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Like74
Rating4.2
#049

Encounters

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Dimensions: A Casebook of Alien Contact cover
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Like10
Rating4.2
#048

Dimensions: A Casebook of Alien Contact

by
The Messengers: Owls, Synchronicity and the UFO Abductee cover
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Like28
Rating4.6
#047

The Messengers: Owls, Synchronicity and the UFO Abductee

by
The Flying Saucers Are Real cover
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Like36
Rating4.0
#046

The Flying Saucers Are Real

by
Some Trust in Chariots: Sixteen Views on Erich von Däniken's Chariots of the Gods? cover
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Rating4.8
#045

Some Trust in Chariots: Sixteen Views on Erich von Däniken's Chariots of the Gods?

by
Carl Sagan's Universe cover
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Like36
Rating4.0
#044

Carl Sagan's Universe

by
The UFO Experience: A Scientific Inquiry cover
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Like14
Rating3.8
#043

The UFO Experience: A Scientific Inquiry

by
UFOs and Nukes: Extraordinary Encounters at Nuclear Weapons Sites cover
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Like94
Rating4.2
#042

UFOs and Nukes: Extraordinary Encounters at Nuclear Weapons Sites

by
Confrontations: Un scientifique à la recherche du contact avec un autre monde cover
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Like84
Rating3.8
#041

Confrontations: Un scientifique à la recherche du contact avec un autre monde

by
Communion cover
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Like8
Rating4.4
#040

Communion

by
Carl Sagan: A Life cover
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Like80
Rating3.1
#038

Carl Sagan: A Life

by
The Roswell Incident cover
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Like44
Rating3.8
#037

The Roswell Incident

by
The Interrupted Journey cover
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Like72
Rating4.0
#035

The Interrupted Journey

by
UFO cover
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Like20
Rating4.4
#033

UFO

by
Skinwalkers at the Pentagon cover
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Like94
Rating4.2
#032

Skinwalkers at the Pentagon

by
The Roswell Legacy cover
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Like64
Rating4.2
#031

The Roswell Legacy

by
Carl Sagan and Immanuel Velikovsky cover
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Like58
Rating4.4
#030

Carl Sagan and Immanuel Velikovsky

by
Cosmos cover
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Like34
Rating3.8
#029

Cosmos

by
Carl Sagan: A Biography cover
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Like34
Rating3.1
#026

Carl Sagan: A Biography

by
UFOs in Space cover
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Like66
Rating4.2
#025

UFOs in Space

by
Pale Blue Dot: A Vision of the Human Future in Space cover
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Like62
Rating4.4
#023

Pale Blue Dot: A Vision of the Human Future in Space

by
The 37th Parallel cover
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Like102
Rating4.0
#022

The 37th Parallel

by
Report on Communion cover
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Like74
Rating4.2
#021

Report on Communion

by
Contact cover
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Rating4.4
#020

Contact

by
Surviving Death cover
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Like32
Rating4.0
#019

Surviving Death

by
Zurück zu den Sternen cover
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Like36
Rating4.0
#016

Zurück zu den Sternen

by
El Universo de Carl Sagan cover
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Like78
Rating4.4
#015

El Universo de Carl Sagan

by
The UFO Evidence cover
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Like64
Rating4.2
#014

The UFO Evidence

Passport to Magonia: From Folklore to Flying Saucers cover
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Like62
Rating3.8
#011

Passport to Magonia: From Folklore to Flying Saucers

by
Carl Sagan: A Life in the Cosmos cover
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Like46
Rating3.1
#010

Carl Sagan: A Life in the Cosmos

by
Forbidden Science cover
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Like72
Rating4.6
#009

Forbidden Science

by
The Gods Never Left Us cover
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Like56
Rating4.8
#007

The Gods Never Left Us

by
Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium cover
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Like80
Rating3.3
#006

Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium

by
Alintel cover
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Like48
Rating3.8
#005

Alintel

by
Révélations: Contact avec un autre monde ou manipulation humaine? cover
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Like22
Rating4.2
#004

Révélations: Contact avec un autre monde ou manipulation humaine?

by
Confrontations: A Scientist's Search for Alien Contact cover
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Like92
Rating4.0
#002

Confrontations: A Scientist's Search for Alien Contact

by
The Varieties of Scientific Experience: A Personal View of the Search for God cover
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Like56
Rating4.6
#001

The Varieties of Scientific Experience: A Personal View of the Search for God

by