Results 51 to 60 of about 836 (165)
Technosignatures Gap List Study
, 2022 Abstract: Motivation and Objective: The ExEP (Exoplanet Exploration Program) is a program within NASA’s Astrophysics Division whose charter includes identification and development of key technologies to enable the discovery of habitable worlds. We are following up on the 2018 NASA Technosignatures (TS) Workshop report to inform the ExEP with a thorough
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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
doaj +1 more source
Persistence of Technosignatures: A Comment on Lingam and Loeb [PDF]
Astrobiology, 2019 In a recent paper in this journal, Lingam and Loeb (2018) develop an excellent heuristic for searches for biosignatures vs. technosignatures. We consider two ways in which their approach could be extended and sharpened, with focus on durability of technosignatures.
Ćirković, Milan M. +2 more
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Observational Constraints on the Great Filter
, 2020 The search for spectroscopic biosignatures with the next-generation of space telescopes could provide observational constraints on the abundance of exoplanets with signs of life.
Haqq-Misra, Jacob +2 more
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The Astronomical JournalThe field of Search for Extraterrestrial Intelligence (SETI) searches for “technosignatures” could provide the first detection of life beyond Earth through the technology that an extraterrestrial intelligence may have created.
Sofia Z. Sheikh +7 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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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
wiley +1 more source
A Limited Habitable Zone for Complex Life
, 2019 The habitable zone (HZ) is commonly defined as the range of distances from a host star within which liquid water, a key requirement for life, may exist on a planet's surface. Substantially more CO2 than present in Earth's modern atmosphere is required to
Harman, Chester E. +4 more
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The Most Sensitive SETI Observations Toward Barnard's Star with FAST
The Astronomical Journal, 2023 Search for extraterrestrial intelligence (SETI) has been mainly focused on nearby stars and their planets in recent years. Barnard’s star is the second closest star system to the Sun and the closest star in the Five-hundred-meter Aperture Spherical radio
Zhen-Zhao Tao +6 more
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, 2018 Exoplanet surface imaging, cartography and the search for exolife are the next frontiers of planetology and astrophysics. Here we present an over-view of ideas and techniques to resolve albedo features on exoplanetary surfaces.
A Carbognani +37 more
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