Results 21 to 30 of about 167 (129)
Astrophysical Technosignatures
, 2020 Our conventional SETI endeavors have focused on detecting artificial signs with communication techniques that are in everyday use in our present state of technical culture. These include the use of electromagnetic waves, i.e. radio, laser, and visible light communication techniques.
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Cosmic Illuminating Gift: A One-Way Information Box for Extraterrestrial Intelligences
UniverseWe introduce the concept of a one-way, broadband information package, the Cosmic Illuminating Gift, intended to provide distant intelligences with fundamental empirical data about the Universe. Unlike previous messaging to extraterrestrial intelligences (
Arman Shafieloo
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AerospaceThis study presents the implementation of Multi-Criteria Decision-Making (MCDM) methodologies, particularly the fuzzy technique for order of preference by similarity to ideal solution (TOPSIS), in prioritizing technosignatures (TSs) for the search for ...
Juan Miguel Sánchez-Lozano +2 more
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Time Markers for SETI in Binary Systems: History and Prospects
AstronomyContemporary surveys in the search for extraterrestrial intelligence (SETI) typically make one-off “spot scans” across the sky to search planetary systems for narrow-band radio signals that would indicate the presence of intelligent life.
Jacob Haqq-Misra
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Multibeam Blind Search of Targeted SETI Observations toward 33 Exoplanet Systems with FAST
The Astronomical Journal, 2023 The search for extraterrestrial intelligence (SETI) is to search for technosignatures associated with extraterrestrial life, such as engineered radio signals.
Xiao-Hang Luan +10 more
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Journal for the Theory of Social Behaviour, Volume 55, Issue 4, December 2025.ABSTRACT Humanity seems stuck on different ways to fail to meet the challenge posed by a declared climate emergency and manifest problems of ecological breakdown. Rather than reprise these failures, we use the Fermi Paradox and simulation hypothesis to make a simple point about agency. The argument unfolds in two sections.
Jamie Morgan
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, 2019 White paper submitted to the Astro2020 Decadal ...
Wright, Jason T., Kipping, David
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Signal Synchronization Strategies and Time Domain SETI with Gaia DR3
The Astronomical Journal, 2023 Spatiotemporal techniques for signal coordination with actively transmitting extraterrestrial civilizations, without the need for prior communication, can constrain technosignature searches to a significantly smaller coordinate space.
Andy Nilipour +3 more
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What is the noosphere? Planetary superorganism, major evolutionary transition and emergence
Systems Research and Behavioral Science, Volume 41, Issue 4, Page 614-622, July/August 2024.Abstract The noosphere remains an underappreciated and understudied idea despite that it provides unique hope towards a positive and meaningful global integration. A core reason for this lack of attention is that its very definition is often unclear both in the West with Teilhard de Chardin and in the East with Vernadsky.
Clément Vidal
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Specular Reflections from Artificial Surfaces as Technosignature
Astrobiology, 2023 Direct imaging of exoplanets will allow for observation of a planet in reflected light. Such a scenario may eventually allow for the possibility to scan a planetary surface for the presence of artificial structures made by alien civilizations. Detectability of planetary-scale structures, called megastructures, has been previously explored. In this work,
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