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The possible effect of solar activity on lightning has been studied for a long period of time. Specifically, the relationship between sunspot number and lightning activity has been investigated, although the results still remain inconclusive across regions and…
crossref
Eija Tanskanen, Marzieh Khansari
2024-03-11T12:43:31Z
置信度 0.70
-
crossref
2018-12-20T11:07:27Z
置信度 0.70
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crossref
Barry Markovsky
2025-08-25T10:34:57Z
置信度 0.70
-
TypeNa2O MgO Al2O3 SiO2 P2O5 SO2 K2O CaO TiO2 Cr2O3 MnO FeO CoO NiO Total AAS-38/43-P40 Scoriaceous 0.1 22.5 2.0 31.0 0.0 1.1 0.0 0.1 0.1 0.9 0.3 39.8 0.1 0.9 99.0 AAS-38/43-P55 Scoriaceous 0.1 24.5 1.0 32.1 0.1 0.0 0.0 0.4 0.1 0.7 0.2 36.3 0.1 0.5 96.1 AAS-38…
crossref
Rudraswami N. Gowda, Mayank Pandey, Matthew J. Genge, Dafilgo Fernandes
2020-09-11T07:59:29Z
置信度 0.70
-
crossref
2023-09-01T20:21:45Z
置信度 0.70
-
crossref
2017-09-07T21:42:09Z
置信度 0.70
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Astronomer and exobiologist Carl Sagan wrote: Space exploration leads directly to religious and philosophical questions. l Just what are these questions? Unfortunately, some of the first questions typically asked are very misleading. At the top of the list is …
crossref
2020-12-24T20:29:48Z
置信度 0.70
-
crossref
Christian Koeberl
2007-12-07T22:29:04Z
置信度 0.70
-
This paper presents a unique correlative microscopic method for the structural characterization of extraterrestrial minerals. A fragment from the pallasite Seymchan meteorite that consists of olivine grains mixed into a metallic iron matrix with variable nicke…
openalex
Mihaela Albu, Harald Fitzek, David Moser, Gerald Kothleitner 等
2020-11-19
置信度 0.72
Extraterrestrial lifeCorrelativeElectron microscopeAstrobiologyMicroscopy
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The enduring human quest to understand if we are alone in the universe has driven the development of the Search for Extraterrestrial Intelligence (SETI) programs. These programs employ a diverse toolkit of techniques aimed at detecting potential technosignatur…
crossref
Boris Menin
2024-09-23T13:59:08Z
置信度 0.70
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We have argued that planning for a search for extraterrestrial intelligence should involve a minimum number of assumptions. In view of the feasibility (at our present level of understanding) of using nuclear fusion to effect interstellar travel at a speed of 0…
crossref
T. B. H. Kuiper, M. Morris
2006-10-25T21:56:46Z
置信度 0.70
-
crossref
2023-09-01T20:21:45Z
置信度 0.70
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The discovery of possible fossils of nanobacteria in a meteorite from Mars is both an exciting development and a considerably challenge for future work. The meteorite bearing the possible fossils, ALH84001, has been on Earth for over ten thousand years, and th…
crossref
Paul H. Benoit, Anne E. Taunton
2005-03-28T18:01:09Z
置信度 0.70
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The purpose of this bibliography is to provide a reference source on all extraterrestrial research pertinent to planetary exploration, scientific investigation, and base construction, and to include all known references in these and related areas.
crossref
Robert W. Henny
2017-09-29T12:41:23Z
置信度 0.70
-
crossref
Daniela Tirsch
2015-10-15T14:54:47Z
置信度 0.70
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This paper strongly suggests that the microwave rationale behind modern-day SETI lore is suspect, and that our search for electromagnetic signals from extraterrestrial technical civilizations may be doomed to failure because we are 'tuned to the wrong frequenc…
crossref
Stuart A. Kingsley
2005-07-22T18:01:52Z
置信度 0.70
-
crossref
2013-11-27T15:12:38Z
置信度 0.70
-
PERSPECTIVES OF ARTIFICIAL INTELLIGENCE APPLICATION FOR AUTONOMOUS UNMANNED VEHICLES IN EXTRATERRESTRIAL ENVIRONMENTS PERSPECTIVES OF ARTIFICIAL INTELLIGENCE APPLICATION FOR AUTONOMOUS UNMANNED VEHICLES IN EXTRATERRESTRIAL ENVIRONMENTS ≡ Human and space
crossref
Vitalina Shchapova
2026-06-18T08:42:57Z
置信度 0.70
-
crossref
Ester Lázaro
2025-08-25T10:19:09Z
置信度 0.70
-
crossref
2011-05-12T02:29:51Z
置信度 0.70
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The previous bibliography is extended to include abstracts of articles published in 1950. The sections deal with the literature concerning solar radiation, general galactic radiation, radiation from discrete sources, lunar radiation, and miscellaneous radiatio…
crossref
Martha S. Carpenter
2017-08-30T19:48:23Z
置信度 0.70
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crossref
Jonathan D A Clarke
2025-10-22T09:07:05Z
置信度 0.70
-
NAVIGATION is a quarterly journal published by the Institute of Navigation. The journal publishes original, peer-reviewed articles on all aspects of positioning, navigation, and timing. The journal also publishes selected technical notes and survey articles, a…
crossref
DANDRIDGE M. COLE
2014-08-29T19:04:19Z
置信度 0.70
-
This chapter contains section titled: 15.1 The Moon 15.2 Mercury 15.3 Mars 15.4 Venus
crossref
2008-03-17T11:46:38Z
置信度 0.70
-
Apart from the elements in Mendeleev s periodic table (H, Li, Be, the chemical elements and their isotopes are nearly all the result of stellar nudeosynthesis (Clayton , 1 983 ; Fowler, 1 9 84) . By 1 970, it was traditionally admitted that one of the best sup…
crossref
2014-08-27T18:54:27Z
置信度 0.70
-
crossref
Mark Juszczak
2023-01-14T08:39:14Z
置信度 0.70
-
crossref
2023-09-01T20:21:45Z
置信度 0.70
-
The first tourists on the Moon were the astronauts. Everyone was a tourist. It took a lot of willpower to focus on one’s work rather than look around in awe at the extraordinary sights. Of course, eventually, the view became more routine and, regardless, the a…
crossref
Haym Benaroya
2016-05-31T07:39:59Z
置信度 0.70
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There is one way in which we could discover extraterrestrial life now, with no more than the instruments we already have, and this is by life telling us that it is there. This could be by transmitting radio or laser signals that we receive, or by sending probe…
crossref
2008-09-01T23:48:50Z
置信度 0.70
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For 2 weeks on the Greenland ice cap, scientists tested an instrument that might help us find life on icy moons with oceans beneath their crusts.
crossref
JoAnna Wendel
2017-05-11T12:11:08Z
置信度 0.70
-
crossref
2015-10-15T14:54:47Z
置信度 0.70
-
This book provides a comprehensive review in the field of exoplanets and the search for extraterrestrial life.
crossref
Antonino Del Popolo
2025-03-05T11:37:13Z
置信度 0.70
-
crossref
2023-07-27T09:05:47Z
置信度 0.70
-
crossref
GEORGE MARX
2013-11-18T12:35:19Z
置信度 0.70
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crossref
2024-09-07T20:46:30Z
置信度 0.70
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In Extraterrestrial Remote Sensing and Climate Change, the author addresses longstanding questions about a possible correlation between fluctuations in solar activity and changes in the Earth's atmosphere and geosphere that have been observed during periods of…
crossref
Saumitra Mukherjee
2022-12-23T17:11:16Z
置信度 0.70
-
crossref
Anonymous
2020-09-29T14:51:51Z
置信度 0.70
-
openalex
Daniel E. Harlov, Leonid Aranovich, L. Ya. Aranovich
2018-01-01
置信度 0.72
Mantle (geology)GeologyGeochemistryCrustSilicate
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crossref
Cheng Bin
2017-06-12T09:40:40Z
置信度 0.70
-
Abstract Gamma-ray astronomy has been one of the prime scientific research fields of the Max-Planck Institute for Extraterrestrial Physics (MPE) from its beginning. Over the years, the entire gamma-ray energy range accessible from space was explored. The purpo…
crossref
Volker Schönfelder, Jochen Greiner
2021-10-30T20:19:04Z
置信度 0.70
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Since the Apollo 16 mission in 1972, Bacillus subtilis served as bacterial model organism in space. Due to the ability to form highly resistant endospores and complex biofilms, it was used to investigate the effects of unshielded space radiation as well as the…
crossref
Felix Matthias Fuchs
2022-02-21T12:09:56Z
置信度 0.70
-
crossref
JOHN BILLINGHAM, RUDOLF PEŠEK
2013-11-18T07:35:15Z
置信度 0.70
-
crossref
2025-12-16T14:16:06Z
置信度 0.70
-
crossref
2013-11-21T20:38:32Z
置信度 0.70
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This is the first collegiate-level textbook to comprehensively cover the Search for Extraterrestrial Intelligence (SETI), addressing its theoretical, practical, historical, and social aspects. It explores the nature of alien life, technosignatures, detection m…
crossref
Jason T Wright
2026-01-19T09:44:23Z
置信度 0.70
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The prelims comprise: Half-Title Page Title Page Copyright Page Contents Preface Acknowledgments
crossref
2022-12-23T22:11:16Z
置信度 0.70
-
crossref
Roger Mason
2012-05-20T11:04:12Z
置信度 0.70
-
crossref
2026-02-08T10:49:07Z
置信度 0.70
-
crossref
Roger Mason
2013-11-22T03:14:21Z
置信度 0.70
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crossref
Frederic Su
2008-03-18T17:20:30Z
置信度 0.70
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crossref
Christian Koeberl
2006-03-22T13:52:55Z
置信度 0.70
-
The microwave region of the electromagnetic spectrum, a plausible regime for signals from extraterrestrial intelligences, is largely unexplored. With new technology, particularly in data processing and low-noise reception, surveys can be conducted over broad r…
crossref
Bruce Murray, Samuel Gulkis, Robert E. Edelson
2006-10-05T16:35:25Z
置信度 0.70
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crossref
David Wilkinson
2013-10-01T15:49:15Z
置信度 0.70
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This research investigates the possible failures caused by aging and other environmental and external factors that could significantly impact the performance of extraterrestrial power systems. Additionally, it presents a reliability assessment model for the sp…
crossref
Leila Chebbo, Hasnain Nisar, Ali Bazzi
2024-11-06T11:28:42Z
置信度 0.70
-
crossref
2007-11-27T15:59:35Z
置信度 0.70
-
crossref
2013-04-30T14:51:53Z
置信度 0.70
-
Are we are alone in the Universe? Almost every adult human alive today has asked this question. About 400 years ago, when Galileo watched the four large moons of Jupiter orbit the giant planet, he probably asked himself that very same question. Perhaps even wh…
crossref
2014-08-06T05:02:23Z
置信度 0.70
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A review is presented of the currently available evidence of life in the Precambrian, with special reference to ultrafine morphologies of the size range 0.1 - 3 micrometers . The particles are to be found under high apertures of the light microscope in thin se…
openalex
Hans D. Pflug, Bettina Heinz
1997-07-11
置信度 0.72
Murchison meteoriteMeteoriteAstrobiologyHadeanCarbonaceous chondrite
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Extraterrestrial material has usually been treated as delivered cargo: amino acids, nucleobases, organics, brines, or biological vectors. A boundary-condition approach asks a different question: how did arrival alter the chemical state space in which early Ear…
crossref
Gabriel DuPree
2026-05-26T17:55:52Z
置信度 0.70
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It is proposed that visitation by extraterrestrial spacecraft (UFO) alters the electromagnetic properties of the earth, its atmosphere, and its oceans and that these changes can cause global warming leading to climate change and thence to the catastrophic cons…
crossref
Jamal Munshi
2018-03-22T23:15:20Z
置信度 0.70
-
crossref
P. Lognonné, W. T. Pike
2015-07-05T05:03:51Z
置信度 0.70
-
Abstract Since the early 1990s, in analytical reviews, experts have increasingly been paying attention to the growing scarcity of rare and rare earth metals (REM) necessary for the development of advanced technologies in modern industry. The volume of the worl…
crossref
V V Shevchenko
2018-06-26T16:40:48Z
置信度 0.70
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This thesis investigates the use of ultrasonic pulse velocity (UPV) tests for extraterrestrial rock characterization by evaluating the effects of physical sample properties on the signal attenuation of ultrasonic waves. An initial review of standard laboratory…
crossref
Thomas W. Edge II
2019-10-03T13:40:31Z
置信度 0.70
-
crossref
2011-08-25T14:24:50Z
置信度 0.70
-
crossref
S.K. Haldar
2020-08-07T06:10:00Z
置信度 0.70
-
Extraterrestrial material has often been evaluated as delivered cargo: amino acids, nucleobases, organics, brines, or biological vectors. A boundary-condition approach asks how arrival altered the chemical state space in which early Earth systems persisted, fa…
crossref
Gabriel DuPree
2026-07-21T21:05:27Z
置信度 0.70
-
crossref
2026-02-08T10:49:07Z
置信度 0.70
-
crossref
2023-09-19T14:13:10Z
置信度 0.70
-
crossref
2023-09-19T14:13:10Z
置信度 0.70
-
crossref
2026-02-08T10:49:07Z
置信度 0.70
-
The complex dynamics of highly turbulent solar magneto convection is a source of acoustic waves, and also various self-organization processes, observed on different scales on the Sun: from tiny vortex tubes to large-scale convection and active regions. Recent …
crossref
I. N. Kitiashvili
2015-07-05T05:03:51Z
置信度 0.70
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Introduction Variable stars have been observed since the discovery of the variability of Mira by David Fabricius at the end of the sixteenth century (Olbers, 1850) with a variation of 10 stellar magnitudes! The first known photometric measurement gf variabilit…
crossref
T. Appourchaux, F Grundahl
2015-07-05T05:03:51Z
置信度 0.70
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A short piece communicating opportunities in space and planetary sciences.
crossref
Amy Riches
2021-06-03T09:30:43Z
置信度 0.70
-
Introduction Extraterrestrial rocks formed in quite different environments from those on earth. In practically all cases, oxygen fugacity was very low during crystallization and later shock or thermal metamorphism. Iron-nickel alloys, rather than iron–titanium…
crossref
2010-07-02T17:08:19Z
置信度 0.70
-
Laser-based optical spectroscopic techniques, namely Raman spectroscopy, laser-induced breakdown spectroscopy (LIBS), and photoluminescence (PL), are advanced analytical tools reliably used for remote sensing in space exploration and its parallels in Earth-bas…
europepmc
2026
置信度 0.80
-
Phosphorus (P) is a critical element for life, yet its primary geochemical form-orthophosphate-is poorly soluble and unreactive under early Earth conditions, presenting the longstanding "phosphate problem" in prebiotic chemistry. In this brief review, we give …
europepmc
Maheen Gull, Harold A. Cruz
2026
置信度 0.80
AbiogenesisEarth (classical element)AstrobiologyChemistryEnvironmental chemistry
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Liquid water exists on the Earth and several other planetary bodies in our solar system. The chemical character of these aqueous reservoirs is central to evaluating their habitability. Here, we synthesize the chemical features of water reservoirs and their bio…
europepmc
2026
置信度 0.80
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Traditional prebiotic chemistry experiments often isolated single reactions under clean, controlled conditions, yet early Earth was chemically diverse and physically dynamic. Such primordial complexity likely imposed obstacles, including side reactions, low yi…
europepmc
Alberto Vázquez-Salazar
2026
置信度 0.80
RNAAbiogenesisComputational biologyContext (archaeology)Robustness (evolution)
-
Sulphur, a major by-product of the oil and gas industry, has emerged as a promising construction material in both sulphur concrete (SC) and sulphur-extended asphalt (SEA) applications. This review examines the development, properties, and uses of these sulphur…
europepmc
Mohsin Usman Qureshi, Ali Al-Shamakhi, Mohammed Rumhi, Muhammad Ashraf Javid 等
2026
置信度 0.80
DurabilityAsphaltEngineeringCivil engineeringConstruction engineering
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Life emerged on Earth in an ultramafic world under anaerobic conditions and conditioned by particular environmental characteristics for which no record remains. Molecular clocks suggest that the Last Universal Common Ancestor, LUCA, lived in a well-established…
europepmc
2025
置信度 0.80
-
Human space exploration faces different challenges. Topics like Bioregenerative Life Support Systems, In Situ Resource Utilization, and radiation protection, still require for more suitable solutions to be applied in long-term space exploration. Synthetic biol…
europepmc
Silvano Onofri, Ralf Moeller, Daniela Billi, Michele Balsamo 等
2025
置信度 0.80
Synthetic biologySpace (punctuation)AstrobiologyBiologyComputational biology
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This study examines the tribological performance of dry-running mechanical face seals composed of a graphite rotating ring and a silicon carbide stationary ring under varying contact pressure conditions from 0.23 to 0.83 MPa), both in clean operation and in th…
europepmc
2026
置信度 0.80
-
Freezing point depression due to high salt concentration is crucial for liquid water to exist on cold worlds, expanding special regions where habitats are plausible. Determination of the growth tolerances of terrestrial microbes in analog systems impacts plane…
europepmc
2025
置信度 0.80
-
We present the proposed strategic study, 'Integrated elements for Martian life signature exploration', to support the sampling and identification of any potential biosignatures in compliance with the engineering constraints of the Tianwen-3 mission.
europepmc
Zengqian Hou, Jizhong Liu, Yang Liu, Yigang Xu 等
2024
置信度 0.80
Mars Exploration ProgramAstrobiologyLife on MarsSample (material)Biology
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Synchrotron powder X-ray diffraction (PXRD) offers significant advantages in the structural analysis of functional materials and enables the acquisition of high-quality data; however, accurate data collection remains challenging for samples consisting of coars…
europepmc
2026
置信度 0.80
-
Nanozymes have progressed from simple enzyme mimics to a versatile class of artificial catalysts that expand functionality beyond the reach of natural enzymes. Their unique compositional and structural properties confer exceptional versatility in catalysis, en…
europepmc
2026
置信度 0.80
-
Long-duration space missions pose serious challenges to astronaut nutrition and health due to the altered environment of Low Earth Orbit (LEO). This study examines the nutritional composition of crops grown in space, identifying deficiencies in key nutrients s…
europepmc
Borja Barbero Barcenilla, R. Rivero, Anne M. Lynch, Walter Cromer 等
2025
置信度 0.80
BiofortificationBiologyBiotechnologyMedicineMicronutrient
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Micrometeorites are estimated to represent the main part of the present flux of extraterrestrial matter found on the Earth's surface and provide valuable samples to probe the interplanetary medium. Here, we describe large and representative collections of micr…
europepmc
Matthias Van Ginneken, Penelope J. Wozniakiewicz, D. E. Brownlee, Vinciane Debaille 等
2024
置信度 0.80
AstrobiologyEarth scienceMoraineMeteoriteGlacial period
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An impact origin for Silverpit Crater, on the UK continental shelf, has been contested over the last two decades, with a lack of definitive evidence - traditionally petrographic evidence of shock metamorphism - to resolve the debate. Here we present 3D seismic…
europepmc
2025
置信度 0.80
-
NASA's Mars 2020 mission has initiated collection of samples from Mars' Jezero Crater, which has a wide range of ancient rocks and rock types from lavas to lacustrine sedimentary rocks. The Mars Sample Return (MSR) Campaign, a joint effort between NASA and ESA…
europepmc
F. M. McCubbin, Kenneth A. Farley, A. D. Harrington, Aurore Hützler 等
2025
置信度 0.80
AstrobiologyMars Exploration ProgramSample (material)PhysicsThermodynamics
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Microbes from terrestrial extreme environments enable testing of biosignature production in conditions relevant to astrobiological targets. Mars, which was likely more conducive to life during early warmer and wetter epochs, has inspired missions that search f…
europepmc
2025
置信度 0.80
-
Homochirality is an obvious feature of life on Earth. On the other hand, extraterrestrial samples contain largely racemic compounds. The same is true for any common organic synthesis. Therefore, it has been a perplexing puzzle for decades how these racemates c…
europepmc
Michael G. Weller
2024
置信度 0.80
HomochiralityAbiogenesisChemistryMoleculeChirality (physics)
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Soil carbon stabilization is mainly driven by organo-mineral interactions. Coprecipitates, of organic matter with short-range order minerals, detected through indirect chemical extraction methods, are increasingly recognized as key carbon sequestration phases.…
europepmc
2023
置信度 0.80
-
Lava tubes formed during the 2021 Tajogaite eruption on La Palma (Canary Islands, Spain) provide a rare opportunity to investigate the earliest stages of microbial colonization in a newly created subterranean volcanic environment. Although microbial communitie…
europepmc
2026
置信度 0.80
-
Dehydroxylate I, a product of the thermal decomposition of serpentine, has been observed in heated carbonaceous chondrite meteorites. To better understand the occurrence of dehydroxylate I on carbonaceous asteroids, we have experimentally heated the carbonaceo…
europepmc
2025
置信度 0.80
-
Abstract The mechanical properties of rocks, including the elastic modulus and uniaxial compressive strength, play a crucial role in rock engineering design and analysis. However, in specific working conditions such as high-stress rock mass with prominent core…
europepmc
2023
置信度 0.80
-
Phosphorus is essential for extant and nascent life. However, phosphate's low terrestrial abundance and the poor aqueous solubility of phosphorus-bearing minerals pose major hurdles for prebiotic chemistry. Here, we show that silicate-phosphate immiscibility i…
europepmc
Daniel Weller, Thomas Matreux, Iris B. A. Smokers, Almuth Schmid 等
2025
置信度 0.80
PhosphatePrebioticAqueous solutionChemistryPhosphate minerals
-
Prebiotic chemistry in nano-environments confined within catalytic mineral media is emerging as a promising frontier in origins-of-life research. Such confined spaces exhibit physicochemical properties distinct from bulk conditions, enabling out-of-equilibrium…
europepmc
2026
置信度 0.80
-
The samples returned from near-Earth asteroid (162173) Ryugu provide a pristine record of the 4.6 billion years since the birth of the Solar System. The Hayabusa2 initial analysis team has integrated a range of analytical techniques to investigate Ryugu’s orga…
europepmc
2023
置信度 0.80
-
Macromolecular organic solids found in primitive meteorites were the main source of carbon delivered to forming planets in the early Solar System. However, the conditions under which this material formed and its subsequent incorporation into growing planetesim…
europepmc
2025
置信度 0.80