Results 61 to 70 of about 189,491 (285)

Mantle Flow and Anisotropy in Subduction Zones: Modeling and Clustering of Olivine Textures

Geochemistry, Geophysics, Geosystems
The mantle near Earth's subduction zones endures intense deformation that generates anisotropic rock textures. These textures can be observed seismically and modeled geodynamically, but the complexity of this deformation makes analyses of these textures ...
Yijun Wang, Ágnes Király, Clinton P. Conrad, Valerie Maupin   +3 more
doaj   +1 more source

Mineral dust increases the habitability of terrestrial planets but confounds biomarker detection

Nature Communications, 2020
In this study, the authors investigate in the influence of atmospheric dust on the habitability of exoplanets. They find that atmospheric dust may postpone planetary water loss; for tidally locked planets in particular, dust can significantly widen the ...
Ian A. Boutle, Manoj Joshi, F. Hugo Lambert, Nathan J. Mayne, Duncan Lyster, James Manners, Robert Ridgway, Krisztian Kohary   +7 more
doaj   +1 more source

Confirmation of a Non‐Transiting Planet in the Habitable Zone of the Nearby M Dwarf L 98‐59

Astronomische Nachrichten, EarlyView.
ABSTRACT Only 40 exoplanetary systems with five or more planets are currently known. These systems are crucial for our understanding of planet formation and planet‐planet interaction. The M dwarf L 98‐59 has previously been found to show evidence of five planets, three of which are transiting.
Paul I. Schwarz, Stefan Dreizler, René Heller   +2 more
wiley   +1 more source

Degassing of CO2 triggers large-scale loss of helium from magma oceans

Communications Earth & Environment
The moon-forming impact caused widespread melting and vaporization of the proto-Earth, leading to the formation of a protolunar disk1,2. Volatile elements trapped in the inner parts of the disk condensed together with heavier elements into a global magma
Anne H. Davis, Razvan Caracas
doaj   +1 more source

The Carbon-deficient Evolution of TRAPPIST-1c

The Astrophysical Journal, 2023
Transiting planets orbiting M dwarfs provide the best opportunity to study the atmospheres of rocky planets with current facilities. As JWST enters its second year of science operations, an important initial endeavor is to determine whether these rocky ...
Katie E. Teixeira, Caroline V. Morley, Bradford J. Foley, Cayman T. Unterborn   +3 more
doaj   +1 more source

Binary Gravitational Perturbations and Their Influence on the Habitability of Circumstellar Planets

Frontiers in Astronomy and Space Sciences, 2021
In order to assess the habitability of planets in binary star systems, not only astrophysical considerations regarding stellar and atmospheric conditions are needed, but orbital dynamics and the architecture of the system also play an important role. Due
Elke Pilat-Lohinger, Ákos Bazsó
doaj   +1 more source

Symbolic or Substantive Action: Intent, Effort, and Results

Business Strategy and the Environment, EarlyView.
ABSTRACT Many firms have made ambitious climate pledges since the Paris Agreement of 2015. These pledges may be symbolic or substantive, but the literature is fragmented in defining these two terms. We propose a conceptual framework with three frames to delineate symbolic from substantive action: Intent—underlying motivations for engaging in climate ...
Vincent Xinyi Gu, Daniel Charles Matisoff   +1 more
wiley   +1 more source

Habitability of Super-Earths: Gliese 581c and 581d

, 2008
The unexpected diversity of exoplanets includes a growing number of super-Earth planets, i.e., exoplanets with masses smaller than 10 Earth masses. Unlike the larger exoplanets previously found, these smaller planets are more likely to have a similar ...
C. Bounama, M. Cuntz, S. Franck, Udry, Von Bloh, W. von Bloh   +5 more
core   +1 more source

Prolonged Multi‐Phase Magmatism Due To Plume‐Lithosphere Interaction as Applied to the High Arctic Large Igneous Province

Geochemistry, Geophysics, Geosystems
The widespread High Arctic Large Igneous Province (HALIP) exhibits prolonged melting over more than 50 Myr, an observation that is difficult to reconcile with the classic view that large igneous provinces (LIPs) originate from melting in plume heads ...
Björn H. Heyn, Grace E. Shephard, Clinton P. Conrad   +2 more
doaj   +1 more source

A Radiative-convective Model for Terrestrial Planets with Self-consistent Patchy Clouds

The Planetary Science Journal, 2023
Clouds are ubiquitous: they arise for every solar system planet that possesses an atmosphere and have also been suggested as a leading mechanism for obscuring spectral features in exoplanet observations.
James D. Windsor, Tyler D. Robinson, Ravi kumar Kopparapu, Amber V. Young, David E. Trilling, Joe LLama   +5 more
doaj   +1 more source