Results 61 to 70 of about 28,042 (247)
, 2007 As photosynthesis on Earth produces the primary signatures of life that can be detected astronomically at the global scale, a strong focus of the search for extrasolar life will be photosynthesis, particularly photosynthesis that has evolved with a ...
Antígona Segura +12 more
core +2 more sources
Philosophical Aspects of Astrobiology Revisited
Philosophies, 2021 Given the idea that Life as we know it is nothing but a special form of a generically underlying dynamical structure within the physical Universe, we try to introduce a concept of Life that is not only derived from first principles of fundamental physics,
Rainer E. Zimmermann
doaj +1 more source
Proteins: Structure, Function, and Bioinformatics, EarlyView.ABSTRACT Bacterial ferredoxins are small iron–sulfur binding proteins that function as soluble electron shuttles between redox enzymes in the cell. Their simple 2×(β–α–β) fold, central metabolic function, and ubiquity across all kingdoms of life have led to the proposal that ferredoxins were likely among the earliest proteins.
Jan A. Siess, Vikas Nanda
wiley +1 more source
The Origin of Life from Primordial Planets
, 2010 The origin of life and the origin of the universe are among the most important problems of science and they might be inextricably linked. Hydro-gravitational-dynamics (HGD) cosmology predicts hydrogen-helium gas planets in clumps as the dark matter of ...
Gibson, Carl H. +2 more
core +1 more source
Astrobiology in philosophy or philosophy in astrobiology?
Cosmos and history, 2022 The purpose of this paper is to see how the creation of astrophilosophy could better emphasize the role of philosophy today, and would it behave as a side-by-side major philosophical discipline or a complement to the current philosophical disciplines, for example, bringing new light into metaphysics, epistemology, ethics, or philosophy of mind.
openaire +2 more sources
Physiological Differentiation within a Single-Species Biofilm Fueled by Serpentinization
mBio, 2011 Carbonate chimneys at the Lost City hydrothermal field are coated in biofilms dominated by a single phylotype of archaea known as Lost City Methanosarcinales. In this study, we have detected surprising physiological complexity in single-species biofilms,
William J. Brazelton +3 more
doaj +1 more source
Investigating Impacts of Amino Acids on the Structural Stability of Anionic Biomembranes
ChemSystemsChem, Volume 7, Issue 2, March 2025.Glycine and lysine interact with the anionic membrane composed of POPC and POPG (1 : 1). Lysine partitions into the membrane and induces structural alterations, while the membrane remains impermeable to it. In contrast, glycine causes no physicochemical damage and permeates through the membrane.
Arslan Siddique +6 more
wiley +1 more source
Life Beyond the Solar System: Space Weather and Its Impact on Habitable Worlds [PDF]
, 2018 The search of life in the Universe is a fundamental problem of astrobiology and a major priority for NASA. A key area of major progress since the NASA Astrobiology Strategy 2015 (NAS15) has been a shift from the exoplanet discovery phase to a phase of ...
Airapetian, V. S. +35 more
core +1 more source
Astrobiology - an opposing view [PDF]
Bioinformation, 2018 The use of quantum computers and Artificial Intelligence (AI) is imperative for use in space exploration and astrobiology investigations. Considerable progress has been made since the commencement of origin of life laboratory and theoretical studies in the mid 20th century.
openaire +3 more sources
The evolution of reproduction in Ediacaran–Cambrian metazoans
Biological Reviews, EarlyView.ABSTRACT The evolution of reproductive style is a fundamental aspect of metazoan life history but has not been explored holistically through the Ediacaran–Cambrian rise of metazoans. Recent molecular clock analyses based on only unequivocal metazoan fossil calibrations suggest that Porifera were present by at least 590 million years ago (Ma), all major
Rachel A. Wood, Mary L. Droser
wiley +1 more source