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Natural Radioactivity and Chemical Evolution on the Early Earth: Prebiotic Chemistry and Oxygenation [PDF]
Molecules, 2022 It is generally recognized that the evolution of the early Earth was affected by an external energy source: radiation from the early Sun. The hypothesis about the important role of natural radioactivity, as a source of internal energy in the evolution of
Boris Ershov
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An overview of experimental simulations of microbial activity in early Earth [PDF]
Frontiers in Microbiology, 2023 Microbial activity has shaped the evolution of the ocean and atmosphere throughout the Earth history. Thus, experimental simulations of microbial metabolism under the environment conditions of the early Earth can provide vital information regarding ...
Mingyu Zhao +3 more
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A silicate dynamo in the early Earth [PDF]
Nature Communications, 2020 Cooling of the iron core in the early Earth may have been too slow to allow for the generation of a magnetic field. Based on quantum mechanical and geodynamical modelling approaches, the authors find that the electrical conductivity of silicate liquid at
Lars Stixrude +2 more
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Thermal Decomposition and Prebiotic Formation of Adenosine Phosphates in Simulated Early-Earth Evaporative Settings [PDF]
MoleculesAdenosine nucleotides and polyphosphates play a significant role in biochemistry, from participating in the formation of genetic material to serving as metabolic energy currency.
Maheen Gull +5 more
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Biological, Equilibrium and Photochemical Signatures of C, N and S Isotopes in the Early Earth and Exoplanet Atmospheres [PDF]
LifeThe unambiguous detection of biosignatures in exoplanet atmospheres is a primary objective for astrobiologists and exoplanet astronomers. The primary methodology is the observation of combinations of gases considered unlikely to coexist in an atmosphere ...
James R. Lyons
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Was There Land on the Early Earth? [PDF]
Life, 2021 The presence of exposed land on the early Earth is a prerequisite for a certain type of prebiotic chemical evolution in which the oscillating activity of water, driven by short-term, day–night, and seasonal cycles, facilitates the synthesis of proto ...
Jun Korenaga
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Volcanica, 2023 Explosive volcanic eruptions generate electrical discharges, a phenomenon termed volcanic lightning (VL). VL is increasingly well-investigated and monitored for modern eruptions, however volcanism has been active since Earth’s origin. Thus, investigating
Christina Springsklee +7 more
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Venus: A planetary window into early Earth
地球与行星物理论评, 2022 Venus is the most similar planet to the Earth in the solar system in terms of planet size, mass and orbital velocity. Since the early 1960s, Venus has been an important target for human deep space exploration.
Le Chen, Shao-Bing Zhang, Jin-Fei Yu
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Atomic structure and physical properties of peridotite glasses at 1 bar
Frontiers in Earth Science, 2023 Earth’s mantle, whose bulk composition is broadly peridotitic, likely experienced periods of extensive melting in its early history that formed magma oceans and led to its differentiation and formation of an atmosphere. However, the physical behaviour of
Charles Le Losq +2 more
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Can prebiotic systems survive in the wild? An interference chemistry approach
Frontiers in Earth Science, 2022 It is challenging to evaluate the relevance of any given chemical system or geological environment to the origin of life. At the same time, life is the product of prebiotic chemistry that took place in some environment.
Craig R. Walton +4 more
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