Results 21 to 30 of about 1,808 (209)
Marine Science Can Contribute to the Search for Extra-Terrestrial Life [PDF]
LifeLife on our planet likely evolved in the ocean, and thus exo-oceans are key habitats to search for extraterrestrial life. We conducted a data-driven bibliographic survey on the astrobiology literature to identify emerging research trends with marine ...
Jacopo Aguzzi +14 more
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The Astrophysical JournalAre we alone? It is a compelling question that human beings have confronted for centuries. The search for extraterrestrial life is a broad range of quests for finding simple forms of life up to intelligent beings in the Universe. The plausible assumption
Shant Baghram
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Adaptationism fails to resolve Fermi's paradox [PDF]
Serbian Astronomical Journal, 2005 One of the most interesting problems in the nascent discipline of astrobiology is more than half-century old Fermi's paradox: why, considering extraordinary young age of Earth and the Solar System in the Galactic context, don't we perceive much older ...
Ćirković Milan M. +2 more
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Polarization Criterion in Targeted SETI Observation
The Astronomical Journal, 2023 In this paper, we propose a novel method for distinguishing extraterrestrial intelligence (ETI) signals from radio frequency interference (RFI) by leveraging polarization features.
Jian-Kang Li +7 more
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Serbian Astronomical Journal, 2020 I review the origins and development of the idea of Dyson spheres, their purpose, their engineering, and their detectability. I explicate the ways in which the popular imagining of them as monolithic objects would make them dynamically unstable ...
Wright Jason T.
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The Astrophysical Journal, 2023 A planet’s history dictates its current potential to host habitable conditions and life. The concept of the continuously habitable zone (CHZ) has been used to define the region around a star most likely to host planets with long-term habitability ...
Noah W. Tuchow, Jason T. Wright
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The search for extraterrestrial intelligence—SETI [PDF]
Acta Astronautica, 1979 Abstract This article is taken from a NASA Special Publication, SP-419, released in March 1978. The publication deals with most of the current major topics in the field of the Search for Extraterrestrial Intelligence (SETI), and, as described in the Preface, was the result of a two year series of Science Workshops carried out for NASA by a team of ...
PHILIP MORRISON +2 more
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A protocol for messaging to extraterrestrial intelligence [PDF]
Space Policy, 2011 Messaging to extraterrestrial intelligence (METI) is a branch of study concerned with constructing and broadcasting a message toward habitable planets. Since the Arecibo message of 1974, the handful of METI broadcasts have increased in content and complexity, but the lack of an established protocol has produced unorganized or cryptic messages that ...
Atri, Dimitra +2 more
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Arguing About Extraterrestrial Intelligence [PDF]
, 2023 Avi Loeb has defended the hypothesis that the interstellar object, ‘Oumuamua, detected in 2017, is in fact an extraterrestrial artefact. His hypothesis has been widely rejected by the scientific community. On examination however it is not clear why.
Cowie, Christopher
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The discovery of ETI as a high-consequence, low-probability event [PDF]
, 2011 The authors use the opportunity of presenting a paper during the 51st International Astronautical Congress in Rio de Janeiro to introduce a numerical method of characterizing the potential significance of any announcement of discovery of extraterrestrial
Almár, Iván, Tarter, Jill
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