Results 21 to 30 of about 11,825 (205)

Fermi's Paradox - The Last Challenge For Copernicanism? [PDF]

Serbian Astronomical Journal, 2009
We review Fermi's paradox (or the "Great Silence" problem), not only arguably the oldest and crucial problem for the Search for ExtraTerrestrial Intelligence (SETI), but also a conundrum of profound scientific, philosophical and cultural importance. By a
Ćirković, M. M.
doaj   +3 more sources

The Extraterrestrial Hypothesis: A Case for Scientific Openness to an Interstellar Explanation for Unidentified Anomalous Phenomena [PDF]

Философия и космология
Over the past several years the question of unidentified anomalous phenomena (UAP) has commanded increasing interest. Attention has generally focused on two main classes of hypotheses: a conventional terrestrial explanation (e.g., human technology), and ...
Tim Lomas
doaj   +1 more source

Search for Extraterrestrial Intelligence (SETI) by fractal universe

Results in Physics, 2019
We propose the hypothesis that the universes we live are provided with fractal properties, from macro to micro scale, which have self-similarity and space filling.
Sheena Chen, Tong-Jie Zhang
doaj   +1 more source

On the timescale forcing in astrobiology [PDF]

Serbian Astronomical Journal, 2007
We investigate the effects of correlated global regulation mechanisms, especially Galactic gamma-ray bursts (GRBs), on the temporal distribution of hypothetical inhabited planets, using simple Monte Carlo numerical experiments.
Vukotić B., Ćirković M.M.
doaj   +1 more source

On the detectability of intelligent civilizations in the galaxy [PDF]

Serbian Astronomical Journal, 2003
In this paper we argue for the possibility that even in the event of a Galaxy teeming with extraterrestrial intelligence (ETI) the probability of receiving recognizable signals from the ETIs may be very low.
Đurić N., Field L.
doaj   +1 more source

The Benefits and Harms of Transmitting Into Space

, 2013
Deliberate and unintentional radio transmissions from Earth propagate into space. These transmissions could be detected by extraterrestrial watchers over interstellar distances.
Abe, Almár, Anderson, Atri, Bains, Ball, Baum, Baum, Baxter, Bekker, Benford, Benner, Billingham, Borucki, Bostrom, Bostrom, Bradbury, Busch, Carrigan, Cocconi, Denning, Des Marais, Devito, DeVito, Diamond, Domagal-Goldman, Dominik, Drake, Drake, Emslie, Ferris, Forgan, Freudenthal, Hanson, Haqq-Misra, Haqq-Misra, Harris, Hart, Heilhron, Howard, ISU, Jacob Haqq-Misra, Kaplan, Kasting, Kasting, Lemarchand, Lineweaver, Lineweaver, Loeb, Maccone, Michael W. Busch, Muirhead, Musso, Peters, Peters, Sagan, Sagan, Sanjoy M. Som, Scheffer, Seager, Seth D. Baum, SETI, Shapiro, Shklovskii, Shuch, Sullivan, Sullivan, Tarter, Tarter, Tegmark, Vakoch, Vakoch, Vakoch, von Hoerner, Ward, Webb, Zaitsev, Zaitsev, Zaitsev, Ćirković, Ćirković, Ćirković   +81 more
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A Statistical Approach to Illustrate the Challenge of Astrobiology for Public Outreach

Life, 2017
In this study, we attempt to illustrate the competition that constitutes the main challenge of astrobiology, namely the competition between the probability of extraterrestrial life and its detectability.
Frédéric Foucher, Keyron Hickman-Lewis, Frances Westall, André Brack   +3 more
doaj   +1 more source

Signal coverage approach to the detection probability of hypothetical extraterrestrial emitters in the Milky Way

, 2017
The lack of evidence for the existence of extraterrestrial life, even the simplest forms of animal life, makes it is difficult to decide whether the search for extraterrestrial intelligence (SETI) is more a high-risk, high-payoff endeavor than a futile ...
Grimaldi, Claudio
core   +1 more source

Making Outer Space Legal: The “Appearance” of Extraterrestrial Intelligence at the Dawn of the Space Age

Histories
This paper addresses the knowledge gap on the beginning of the history of contact with extraterrestrial intelligent beings in international astronautics. In the mid-1950s, the world’s space law practitioner, Andrew G.
Gabriela Radulescu
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Psycholinguistics and the Search for Extraterrestrial Intelligence [PDF]

Философия и космология, 2017
The author of the article reveals the possibilities of psycholinguistics in the identifi cation and interpretation of languages and texts of Alien Civilizations.
Lidija Krotenko
doaj