Results 1 to 10 of about 28,530 (260)
The birth environment of planetary systems. [PDF]
R Soc Open Sci, 2020 Star and planet formation are inextricably linked. In the earliest phases of the collapse of a protostar, a disc forms around the young star and such discs are observed for the first several million years of a star’s life. It is within these circumstellar, or protoplanetary, discs that the first stages of planet formation occur.
Parker RJ.
europepmc +8 more sources
A Population of planetary systems characterized by short-period, Earth-sized planets. [PDF]
Proc Natl Acad Sci U S A, 2016 Steffen JH, Coughlin JL.
europepmc +2 more sources
Machines, 2023 Planetary gear systems have many advantages over other gear systems. Previous studies on its dynamic characteristics mostly used Earth as the reference system, which is inconsistent with the actual working conditions of many planetary gear systems, such ...
Bingwei Gao, Yongkang Wang, Guangbin Yu
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Earth, Planets and Space, 2023 We report the first experiments, where simultaneous electrical resistivity and elastic wave velocity measurements are acquired during the triaxial deformation of granite under brine-saturated conditions.
Ikuo Katayama +4 more
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Planetary Systems Biology [PDF]
Molecular Cell, 2005 Combining paleogenetics, protein engineering, synthetic biology, and metabolic modeling, a planetary biology perspective is brought to bear on adaptive evolutionary events in ancient bacteria.
Department of Chemistry, University of Florida, Gainesville, FL 32611 USA ( host institution ) +2 more
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Geochemistry, Geophysics, Geosystems, 2023 To assess the paleo‐permeability structure of oceanic crust, we used 3‐D X‐ray Computed Tomography (XCT) images to quantify the distribution and geometry of mineral veins in core samples from Oman Drilling Project Holes GT1A, GT2A, and GT3A, which ...
Y. Akamatsu +3 more
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The Deuterium Isotopic Ratio of Water Released From the Martian Caps as Measured With TGO/NOMAD
Geophysical Research Letters, 2022 We report vertical profiles of water and D/H for one Martian year as measured with the TGO/NOMAD instrument. The observations were performed via solar occultation, providing water profiles up to ∼100 km and D/H up to ∼60 km, with a vertical resolution of
Geronimo L. Villanueva +20 more
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Universe, 2021 The growing database of exoplanets has shown us the statistical characteristics of various exoplanet populations, providing insight towards their origins.
Jonathan H. Jiang +4 more
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The (In)stability of Planetary Systems [PDF]
The Astrophysical Journal, 2004 37 pages, 49 figures, 13 tables, submitted to ...
Barnes, Rory, Quinn, Thomas
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Dynamical Habitability of Planetary Systems [PDF]
Astrobiology, 2010 The problem of the stability of planetary systems, a question that concerns only multiplanetary systems that host at least two planets, is discussed. The problem of mean motion resonances is addressed prior to discussion of the dynamical structure of the more than 350 known planets.
Dvorak, Rudolf +24 more
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