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europepmc
2021
置信度 0.80
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europepmc
2020
置信度 0.80
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europepmc
2019
置信度 0.80
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europepmc
2019
置信度 0.80
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europepmc
2020
置信度 0.80
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europepmc
2020
置信度 0.80
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<p><strong>Introduction</strong></p> <p>Taurus Hill Observatory (THO) [1], observatory code A95, is an amateur observatory located in Varkaus, Finland. The observatory is maintained by the l…
crossref
Harri Haukka, Veli-Pekka Hentunen, Markku Nissinen, Tuomo Salmi 等
2022-07-06T19:28:07Z
置信度 0.70
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Abstract Observations using the Spitzer Space Telescope provided the first detections of photons from extrasolar planets. Spitzer observations are allowing us to infer the temperature structure, composition, and dynamics of exoplanet atmospheres. The Spitzer s…
crossref
Drake Deming
2009-02-23T11:34:55Z
置信度 0.70
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crossref
Aleksander Kozak, Aneta Wojnar
2021-10-27T15:27:11Z
置信度 0.70
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crossref
Takashi KUROKAWA, Ken KASHIWAGI, Takayuki KOTANI, Jun NISHIKAWA 等
2020-09-06T22:10:30Z
置信度 0.70
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Clouds, which are common features in Earth's atmosphere, form in atmospheres of planets that orbit other stars than our Sun, in so-called extrasolar planets or exoplanets. Exoplanet atmospheres can be chemically extremely rich. Exoplanet clouds are therefore c…
crossref
Christiane Helling
2019-02-20T23:27:03Z
置信度 0.70
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crossref
2017-04-06T13:18:19Z
置信度 0.70
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crossref
James Coker
2019-11-08T15:52:24Z
置信度 0.70
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crossref
2017-04-06T12:51:48Z
置信度 0.70
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This article delves into the connection between astronomy and machine learning, specifically focusing on gravitational waves and the detection of exoplanets. It emphasizes how automated analysis tools have become crucial in advancing our understanding of the u…
crossref
Richa Shree -, Pooja Jha -
2023-11-29T08:20:47Z
置信度 0.70
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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Detecting life beyond Earth requires biosignatures that do not depend on the chemistry of known organisms. Molecular assembly (MA), derived from Assembly Theory, quantifies how difficult it is to build a molecule from basic building blocks, linking complexity …
europepmc
Lindsay A. Rutter, Abhishek Sharma, Ian Seet, David Obeh Alobo 等
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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Abstract Considering the harsh surface conditions on Mars, terrestrial organisms that can survive and remain detectable after exposure to similar conditions provide invaluable models for guiding current and future search-for-life missions. To this end, we eval…
europepmc
Sebastian V Gfellner, Janina Groninga, Cyril Colas, Guillaume Gabant 等
2026
置信度 0.80
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On the north shore of Great Salt Lake, Utah, USA, naturally occurring tar seeps at Rozel Point provide an opportunity to study a petroleum-rich environment adjacent to a hypersaline desert ecosystem. Currently, this terminal lake is shrinking, and the Rozel ta…
europepmc
Cayla Martin, Mary Lilibeth Sanchez, June Baxter, David L. Parrott 等
2026
置信度 0.80
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europepmc
2025
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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Space biology literature is growing exponentially. Existing infrastructure has not kept pace with organizing, synthesizing, and disseminating this knowledge. We present SpaceBio SpaceBio Knowledge Hub ( www.spacebio.space ), an integrated digital ecosystem tha…
europepmc
2026
置信度 0.80
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Our investigation in Mars-relevant terrestrial environments where biological material is entombed within rapidly precipitated evaporite crystals has given us the ability to evaluate the preservation potential of a hypersaline brine system in advance of interro…
europepmc
Scott M. Perl, Bonnie K. Baxter, Aaron J. Celestian, Preston Tasoff 等
2025
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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The Mars Sample Return (MSR) Campaign aims to collect and transport to Earth samples of martian atmosphere contained in sample tubes onboard the Mars 2020 rover, Perseverance. Understanding and mitigating the potential impact of terrestrial noble gas contamina…
europepmc
Jeffrey T. Osterhout, Kenneth A. Farley, Meenakshi Wadhwa, Jonathan Treffkorn
2025
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2025
置信度 0.80
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Martian rock and regolith samples are being collected and cached by NASA’s Perseverance rover, with the goal of returning them to Earth as soon as the mid-2030s. Upon return, samples would be housed in a sample receiving facility under biological containment t…
europepmc
Bronwyn L. Teece, David W. Beaty, Heather V. Graham, Gerald McDonnell 等
2025
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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Proteins are highly diverse functional polymers where the specific sequence of amino acids, selected from a standard genetically-encoded alphabet of twenty (C20), determines the structure and ultimately the function of the resulting folded protein. This standa…
europepmc
2026
置信度 0.80
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Chemical and geological processes on prebiotic Earth are believed to have resulted in the emergence of life through the increasing organization and functionality of organic molecules. This primer provides an overview of some key abiotic chemical and physical p…
europepmc
Rotem Edri, Manesh Prakash Joshi, Moran Frenkel-Pinter, Nicholas V. Hud 等
2025-09-26T20:34:42Z
置信度 0.80
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europepmc
2025
置信度 0.80
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europepmc
2025
置信度 0.80
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This work poses and partially explores an astrobiological hypothesis: might polymeric sulfur and phosphorus-based oxides form heteropolymers in the acidic cloud decks of Venus' atmosphere? Following an introduction to the emerging field of computational astrob…
europepmc
2025
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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The alteration of biomass into simpler molecular remnants is relevant for the search for ancient and extraterrestrial life, where identifying recurrent taphonomic pathways is crucial for the attribution of biogenicity to otherwise nonbiological molecules. This…
europepmc
Pablo L. Finkel, Daniel Carrizo, Victor Parro, Federico A. Vignale 等
2025
置信度 0.80
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europepmc
2025
置信度 0.80
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Astrobiology and the search for evidence of life beyond Earth are now key drivers for planetary science and astronomy missions. Efforts are underway to establish evaluative frameworks to interpret potential signs of life in returned data. However, there is a n…
europepmc
Niki Parenteau, Tori Hoehler, Alfonso Davila, Stephanie Getty 等
2025
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2025
置信度 0.80
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The scientific study of the origins of life is a deep pursuit that exists at the intersection of multiple disciplines. Prebiotic chemistry focuses on understanding how biopolymer building blocks such as amino acids, nucleotides, and sugars emerged and how thei…
europepmc
César Menor-Salván, Marta Ruiz-Bermejo
2025-09-26T20:34:42Z
置信度 0.80
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Our understanding of crystalline structures within terrestrial planetary analog environments can shed light on how these features can be interpreted on rocky planets and icy moons in our solar system. The ability to distinguish biogenic and abiotic components …
europepmc
Scott M. Perl, Ashley E. Murphy, Chinmayee Govinda Raj, Stephanie C. Santos 等
2025
置信度 0.80
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The presence of major volatile elements—carbon, hydrogen, nitrogen, and sulfur—on Earth is critical for establishing life. The origin of these life-essential volatile elements (LEVEs) on Earth has been studied for many years. Here, we present a brief compilati…
europepmc
Debjeet Pathak, Rajdeep Dasgupta
2025-09-26T20:34:42Z
置信度 0.80
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Cyanobacteria possess unique biological properties and the ability to perform life-sustaining processes, which make them useful for applications in space exploration and colonization. Their potential use in bioelectricity and fuel production has garnered signi…
europepmc
Nikolay Ryzhkov, Paul J. Janssen, Artur Braun
2025
置信度 0.80
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Concentrated magnesium chloride brines are extreme environments that are inhospitable to life on Earth. The ionic strength of these brines significantly depresses water activity and concomitantly exerts significant chaotropic stress. Although these brines are …
europepmc
Luke A. Fisher, Alyson R. Bovee, Jordan M. McKaig, Benjamin Klempay 等
2025
置信度 0.80
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europepmc
2025
置信度 0.80
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The McMurdo Dry Valleys may harbor diverse surface microbial communities, yet little is known about subsurface microorganisms in permafrost and their potential for paleoecological reconstruction. Here, we present microbial diversity and paleoecology from lower…
europepmc
Jacob T.H. Anderson, Alexis J. Marshall, Roanna Richards-Babbage, Ian R. McDonald 等
2025
置信度 0.80
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Numerous studies have demonstrated that ultraviolet radiation in the C wavelength range produced by light-emitting diodes (UVC-LEDs) is effective for disinfection ( i.e., inactivation of vegetative bacteria and viruses). However, there are few efficacy data av…
europepmc
Joseph Wood, Mariela Monge, Emily P. Seto, Katherine Ratliff 等
2025
置信度 0.80
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Methane (CH [Formula: see text]) is common in fluids sourced from low-temperature hydrating (serpentinizing) peridotites, but the carbon sources, rates, and mechanisms of CH [Formula: see text] formation are uncertain. In CH [Formula: see text] dissolved in gr…
europepmc
2026
置信度 0.80
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The Life Detection Knowledge Base (LDKB) is a community webtool developed to test and evaluate strategies to search for evidence of life beyond Earth, with an emphasis on recognizing potential false-positive and false-negative results. As part of the LDKB fram…
europepmc
Alfonso F. Davila, Tori Hoehler, Niki Parenteau, Marc Neveu 等
2025
置信度 0.80
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europepmc
2025
置信度 0.80
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Modern Great Salt Lake, UT, United States, is what remains after the extensive evaporation of Pleistocene Lake Bonneville, which makes this site an appropriate analog to ancient martian lacustrine systems. Today, evaporite minerals surround the lake, including…
europepmc
Paulina Martinez-Koury, June Baxter, Dianne M. Keller, Elliot A. Jagniecki 等
2025
置信度 0.80
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Future missions dedicated to the search for extant life on Mars will require a clear understanding of the organic biosignature degradation processes in the shallow icy subsurface. Galactic and solar cosmic rays constantly bombard the martian surface and transf…
europepmc
Alexander A. Pavlov, Hannah L. McLain, Kendra K. Farnsworth, Daniel P. Glavin 等
2025
置信度 0.80
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The abundance and distribution of stable isotopes of an element in a substance can provide insights regarding the source, synthesis, and environmental history of that substance. Because isotopic discrimination during chemical reactions can be unique to specifi…
europepmc
David J. Des Marais, Tristan Caro, Rajani Dhingra, Allison C. Fox 等
2025
置信度 0.80
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The Life Detection Knowledge Base (LDKB; https://lifedetectionforum.com/ldkb ) is a community-owned web resource that is designed to facilitate the infusion of astrobiology knowledge and expertise into the conceptualization and design of life detection mission…
europepmc
Andrew Pohorille, Graham Lau, Stanislaw Gliniewicz, Alfonso Davila 等
2025
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
Jon Lima-Zaloumis, Sherry L. Cady, Jen G. Blank, Svetlana Shkolyar 等
2025
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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Previous models of microbial survival on the moon do not directly consider the permanently shadowed regions (PSRs). These regions shield their interiors from many of the biocidal factors encountered in space flight, such as UV irradiation and high temperatures…
pubmed
Moores JE, Kloos JL, Bischof G, Hayes CW 等
2025
置信度 0.82
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Searching for extraterrestrial life and supporting human life in space are traditionally regarded as separate challenges. However, there are significant benefits to an approach that treats them as different aspects of the same essential problem: How can we con…
pubmed
Wordsworth R, Cherubim C, Nangle S, Berliner A 等
2025
置信度 0.82
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2026
置信度 0.80
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Redox-sensitive elements figure prominently in studies of the evolution of Earth’s surface redox state, including the first major rise in atmospheric O 2 , the Paleoproterozoic Great Oxidation Event. Most Precambrian rocks endured multistage tectonothermal his…
europepmc
Ann M. Bauer, Weiqiang Li, Kyle S. Rybacki, Eric E. Roden 等
2025
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2025
置信度 0.80
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europepmc
2025
置信度 0.80
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europepmc
2025
置信度 0.80
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europepmc
2026
置信度 0.80
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Atmospheric organic hazes are widespread across various planetary bodies and have significant effects on both the surface and atmosphere. In this study, we investigate the optical and hygroscopic properties of organic hazes formed through photochemical process…
pubmed
Jansen KT, Reed NW, Browne EC, Tolbert MA 等
2025
置信度 0.82
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The search for traces of life can be based on the detection of specific signatures produced by microorganisms on sedimentary rocks. Microbially induced sedimentary structures (MISSs) develop under specific physicochemical conditions that are likely to have pot…
pubmed
Arrignon F, Fernandez LA, Boulêtreau S, Davies NS 等
2025
置信度 0.82
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europepmc
2025
置信度 0.80
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europepmc
2026
置信度 0.80
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europepmc
2025
置信度 0.80
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The early start to life naively suggests that abiogenesis is a rapid process on Earth-like planets. However, if evolution typically takes ∼4 Gyr to produce intelligent life-forms like us, then the limited lifespan of Earth's biosphere (∼5-6 Gyr) …
pubmed
Kipping D, David Kipping
2025
置信度 0.82
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Carbonaceous chondrite (CC) meteorites are fragments of planetesimals that hold clues about the early solar system's organic matter. Amino acids are key to life on Earth; thus their study from extraterrestrial samples may help identify signs of prebiotic chemi…
pubmed
Aponte JC, McLain HL, Saeedi D, Aghazadeh A 等
2025
置信度 0.82
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Because a range of silica minerals can precipitate from water, the analysis of silica mineral phases is important for astrobiological exploration. In this context, poorly crystalline opaline minerals that contain intracrystalline water are commonly accepted in…
pubmed
Tsukada Y, Bowden SA, Yasumoto Tsukada, Stephen A. Bowden
2025
置信度 0.82
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Europa, Jupiter's second Galilean moon, is believed to host a subsurface ocean in contact with a rocky mantle, where hydrothermal activity may drive the synthesis of organic molecules. Among these possible organic molecules, abiotic synthesis of aromatic amino…
pubmed
Yoffe G, Duer-Milner K, Nordheim TA, Halevy I 等
2025
置信度 0.82
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Several Decadal-level questions in astrophysics, exoplanets, astrobiology, and cosmology can be addressed only at low radio frequencies inaccessible from Earth. The MegaWave Radio Surveyor would open this largely-unexplored region of the electromagnetic spectr…
datacite
Lazio, T. Joseph W., Shkolnik, Evgenya, Aguirre, James, Bale, Stuart D. 等
2026
置信度 0.66
Instrumentation and Methods for Astrophysics (astro-ph.IM)Cosmology and Nongalactic Astrophysics (astro-ph.CO)Earth and Planetary Astrophysics (astro-ph.EP)Solar and Stellar Astrophysics (astro-ph.SR)FOS: Physical sciences
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کالبدشکافی قطعی و اثباتی: تحلیل بنیادین، بازنویسی تانسوری و مدلسازی هوشمندِ «ماهیت تانسوری مسافران کیهانی (دنبالهدارها، شهابسنگها و اجرام بینستارهای) به عنوان پکتهای اطلاعاتی منیفولد ۱۱۵۵ بعدی (HIP-1155) بر اساس پروتکل جامع ۱۰ مرحلهای» ۱. مقدمه: پارادو…
datacite
HAMZAH, SEYED RASOUL
2026
置信度 0.66
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# The Grand Synthesis: A Unified Model of Cosmic Creation**Master Research Compendium, Mathematical Formulations, and Computational Verifications** --- ### AbstractThis project presents **The Grand Synthesis**, a mathematically and metaphysically rigorous fram…
datacite
Chai, Amit
2026
置信度 0.66
Quantum PhysicsSuperstring TheoryGeneral RelativityCosmologySefer Yetzirah
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# The Grand Synthesis: A Unified Model of Cosmic Creation**Master Research Compendium, Mathematical Formulations, and Computational Verifications** --- ### AbstractThis project presents **The Grand Synthesis**, a mathematically and metaphysically rigorous fram…
datacite
Chai, Amit
2026
置信度 0.66
Quantum PhysicsSuperstring TheoryGeneral RelativityCosmologySefer Yetzirah
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🌐 English Version (For the Main Description Field): ### The Grand Synthesis: Master Research Compendium (Version 5.0) **Author:** Amit Chai **Repository Record:** Zenodo Record #22164041 **Intellectual Property Status:** © 2026 Amit Chai. All rights reserved.…
datacite
Chai, Amit
2026
置信度 0.66
Quantum PhysicsSuperstring TheoryGeneral RelativityCosmologySefer Yetzirah
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The Grand Cosmic Lifecycle Theory: A Chrono-Synchronous Resolution to the Fermi Paradox Executive Summary: Why is the galaxy silent despite the vast statistical probability of intelligent life? The Grand Cosmic Lifecycle Theory resolves the Fermi Paradox by sh…
datacite
Benjamin, Jeffrey
2026
置信度 0.66
PhysicsEarth scienceEvolution, PlanetaryPlanetary sciencesTechnosignatures