Results 11 to 20 of about 4,756 (134)

Assessing the Effect of Large Igneous Provinces on Global Oceanic Redox Conditions Using Non‐traditional Metal Isotopes (Molybdenum, Uranium, Thallium)

open access: yesGeophysical Monograph Series, Page 305-323., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Brian Kendall   +2 more
wiley  

+3 more sources

Mineral-Mediated Oligoribonucleotide Condensation: Broadening the Scope of Prebiotic Possibilities on the Early Earth

open access: yesLife, 2023
The origin of life on earth requires the synthesis of protobiopolymers in realistic geologic environments along strictly abiotic pathways that rely on inorganic phases (such as minerals) instead of cellular machinery to promote condensation.
Vincent S. Riggi   +3 more
doaj   +1 more source

Eolian erosion of polygons in the Atacama Desert as a proxy for hyper-arid environments on Earth and beyond

open access: yesScientific Reports, 2022
Polygonal networks occur on various terrestrial and extraterrestrial surfaces holding valuable information on the pedological and climatological conditions under which they develop.
Christof Sager   +3 more
doaj   +1 more source

Free Energies of Reaction for Aqueous Glycine Condensation Chemistry at Extreme Temperatures

open access: yesGeophysical Monograph Series, Page 271-283., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Matthew Kroonblawd, Nir Goldman
wiley  

+1 more source

Widening Perspectives: The Intellectual and Social Benefits of Astrobiology, Big History, and the Exploration of Space

open access: yesJournal of Big History, 2019
Astrobiology is the field of science devoted to searching for life elsewhere in the Universe. It is inherently interdisciplinary, integrating results from multiple fields of science, and in this respect has strong synergies with ‘big history’.
Ian A. Crawford
doaj   +1 more source

Learning Astrobiology 101 with experiments in Baja California, Mexico [PDF]

open access: yesEPJ Web of Conferences, 2019
We present our experience teaching the subject ‘Astrobiology 101’ (“Introducción a la Astrobiología”, in Spanish), given in the University of Baja California at Ensenada, Mexico, since 2004 up to the present.
Vázquez Roberto, Núñez Patricia G.
doaj   +1 more source

Extremophiles: Link between earth and astrobiology [PDF]

open access: yesZbornik Matice Srpske za Prirodne Nauke, 2008
Astrobiology studies the origin, evolution, distribution and future of life in the universe. The most promising worlds in Solar system, beyond Earth, which may harbor life are Mars and Jovian moon Europa.
Stojanović Dejan B.   +5 more
doaj   +1 more source

Metagenomic insights into S(0) precipitation in a terrestrial subsurface lithoautotrophic ecosystem

open access: yesFrontiers in Microbiology, 2015
The Frasassi and Acquasanta Terme cave systems in Italy host isolated lithoautotrophic ecosystems characterized by sulfur-oxidizing biofilms with up to 50% S(0) by mass.
Trinity eHamilton   +6 more
doaj   +1 more source

Preservation of glycine coordination compounds under a gamma radiation dose representative of natural mars radioactivity

open access: yesScientific Reports, 2022
The Martian subsurface is more favorable for organic preservation than its surface because of the shielding effect of rocks from cosmic rays and UV radiation with increasing depth.
Laura J. Bonales   +3 more
doaj   +1 more source

Red-edge position of habitable exoplanets around M-dwarfs

open access: yesScientific Reports, 2017
One of the possible signs of life on distant habitable exoplanets is the red-edge, which is a rise in the reflectivity of planets between visible and near-infrared (NIR) wavelengths.
Kenji Takizawa   +4 more
doaj   +1 more source

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