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Related papers: Fermi's Paradox Is a Daunting Problem---Under What…

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Popular culture (movies, SF literature) and witness accounts of close encounters with extraterrestrials provide a rather bizarre image of Aliens behavior on Earth. It is far from stereotypes of human space exploration. The reported Aliens…

Popular Physics · Physics 2012-07-13 Pawel Sobkowicz

Many hypotheses have been raised to explain the famous Fermi paradox. One of them is that self-replicating probes could have explored the whole Galaxy, including our Solar System, and that they are still to be detected. In this scenario, it…

Popular Physics · Physics 2013-10-01 M. Gillon

A new solution of Fermi's paradox sketched by SF writer Karl Schroeder in his 2002. novel "Permanence" is critically investigated. It is argued that this solution is tightly connected with adaptationism - a widely discussed working…

Astrophysics · Physics 2007-05-23 Milan M. Cirkovic

Within the scheme of conformal cyclic cosmology (CCC), information can be transmitted from aeon to aeon. Accordingly, the "Fermi paradox" and the SETI programme - of communication by remote civilizations - may be examined from a novel…

Cosmology and Nongalactic Astrophysics · Physics 2018-11-05 V. G. Gurzadyan , R. Penrose

Many articulations of the Fermi Paradox have as a premise, implicitly or explicitly, that humanity has searched for signs of extraterrestrial radio transmissions and concluded that there are few or no obvious ones to be found. Tarter et al.…

Instrumentation and Methods for Astrophysics · Physics 2020-07-21 Jason T. Wright , Shubham Kanodia , Emily G. Lubar

Till date we have not made Contact with any Extraterrestrial civilizations. The Fermi Paradox remains a paradox - the Great Silence prevails. In the light of the Rare Earth hypothesis, it seems that advanced life is exceedingly rare in the…

General Physics · Physics 2009-01-19 Pushkar Ganesh Vaidya

One of the most discussed peculiarities of Einstein's theory of relativity is the twin paradox, the fact that the time between two events in space-time appears to depend on the path between these events. We show that this time discrepancy…

General Physics · Physics 2010-08-03 E. Fischer

The existence of intelligent, interstellar traveling and colonising life is a key assumption behind the Fermi Paradox. Until recently, detecting signs of life elsewhere has been so technically challenging as to seem almost impossible.…

Earth and Planetary Astrophysics · Physics 2018-11-16 David L Clements

The affirmative statement of the existence of extraterrestrial life is tentatively raised to the status of a principle. Accordingly, Fermi's question is answered and the anthropic principle is shown to be falsifiable. The time-scale for the…

Astrophysics · Physics 2007-05-23 Domingos S. L. Soares

The Frauchiger--Renner paradox derives an inconsistency when quantum theory is used to describe the use of itself, by means of a scenario where agents model other agents quantumly and reason about each other's knowledge. We observe that…

Quantum Physics · Physics 2026-05-27 Laurens Walleghem , Rui Soares Barbosa , Matthew F. Pusey , Stefan Weigert

The Halting Problem is a version of the Liar's Paradox.

Logic in Computer Science · Computer Science 2016-06-29 Eric C. R. Hehner

The halting problem is considered to be an essential part of the theoretical background to computing. That halting is not in general computable has supposedly been proved in many text books and taught on many computer science courses, in…

Logic in Computer Science · Computer Science 2019-06-14 Bill Stoddart

Astrophysical paradoxes are the paradoxes of physics. The main motivation of a formulated paradox is clearly recognized in the scientific environment because the phenomenon of a paradox itself has become interesting. There is an explanation…

History and Philosophy of Physics · Physics 2008-12-10 Dragoljub A. Cucic

Two opposing tendencies paradoxically coexist in terrestrial consciousness -- the insistent quest for intelligent signals from other civilizations and the persistent aversion to any attempts to transmit such signals from Earth toward…

General Physics · Physics 2007-05-23 Alexander Zaitsev

This article is devoted to the study of which appears as the most famous paradoxes of quantum theory (Schrodinger cat, EPR argument and Aspect experiments, delayed choice experiments and retrocausality problems). Through these experiments,…

Quantum Physics · Physics 2019-06-26 Daniel Parrochia

In the paper, using the language of spin-half particles, Hardy's paradox is examined within different semantics: a partial one, a many-valued one, and one defined as a set of weak values of projection operators. As it is shown in this…

Quantum Physics · Physics 2018-06-06 Arkady Bolotin

Our Universe is a vast, tantalizing enigma - a mystery that has aroused humankind's innate curiosity for eons. Begging questions on alien lifeforms have been thus far unfruitful, even with the bounding advancements we have embarked upon in…

Popular Physics · Physics 2023-02-20 Jonathan H. Jiang , Philip E. Rosen , Kelly Lu , Kristen A. Fahy , Piotr Obacz

There has been an upsurge of interest in the consequences for quantum physics of the so-called Wigner's Friend Paradox. In its original formulation, the paradox has been turned inside out, and virtually every aspect of it has been looked…

Quantum Physics · Physics 2026-05-28 Julio C. F. Silva , B. F. Rizzuti , Cristhiano Duarte

An interesting consequence of the modern cosmological paradigm is the spatial infinity of the universe. When coupled with naturalistic understanding of the origin of life and intelligence, which follows the basic tenets of astrobiology, and…

Astrophysics · Physics 2008-11-26 Milan M. Cirkovic

We explore Fermi's Paradox via a system of differential equations and using simulations of dispersal and interactions between competing interplanetary civilizations. To quantify the resources and potentials of these worlds, three different…

Physics and Society · Physics 2024-11-04 Gregory Roudenko , Yurrian Pierre-Boyer