Results 61 to 70 of about 172,809 (258)

Habitability Models for Planetary Sciences

open access: yes, 2020
Habitability has been generally defined as the capability of an environment to support life. Ecologists have been using Habitat Suitability Models (HSMs) for more than four decades to study the habitability of Earth from local to global scales. Astrobiologists have been proposing different habitability models for some time, with little integration and ...
Méndez, Abel   +34 more
openaire   +2 more sources

Tides, planetary companions, and habitability: habitability in the habitable zone of low-mass stars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2014
Earth-scale planets in the classical habitable zone (HZ) are more likely to be habitable if they possess active geophysics. Without a constant internal energy source, planets cool as they age, eventually terminating tectonic activity and rendering the planet sterile to life.
Richard Greenberg   +3 more
openaire   +3 more sources

Dynamical Habitability of Known Extrasolar Planetary Systems [PDF]

open access: bronzeThe Astrophysical Journal, 2003
Habitability is usually defined as the requirement for a terrestrial planet's atmosphere to sustain liquid water. This definition can be complemented by the dynamical requirement that other planets in the system do not gravitationally perturb terrestrial planets outside of their habitable zone, the orbital region allowing the existence of liquid water.
Kristen Menou, Serge Tabachnik
openalex   +5 more sources

User-friendly carbon-cycle modelling and aspects of Phanerozoic climate change

open access: yesApplied Computing and Geosciences
Carbon-cycle modelling is essential for testing the main carbon sources and sinks as climate forcings, and we introduce and describe GEOCARB_NET, a graphical user interface for the geologic carbon and sulfur cycle model GEOCARBSULFvolc.
Trond H. Torsvik   +3 more
doaj   +1 more source

Survival of habitable planets in unstable planetary systems [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2016
Accepted to ...
Daniel Carrera   +2 more
openaire   +2 more sources

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

open access: yesGeochemistry, 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   +3 more
doaj   +1 more source

A Tectonic Manifesto

open access: yesPerspectives of Earth and Space Scientists, 2023
Tectonics is the scientific discipline that studies the relationship between planetary convection and surface deformation and magmatism. In recent years global tectonic regimes and planetary evolution have become foci of astronomical and planetological ...
Robert Stern, Taras Gerya, Paul Tackley
doaj   +1 more source

Spectroscopic Detection of Biosignatures in Natural Ice Samples as a Proxy for Icy Moons

open access: yesLife, 2023
Some of the icy moons of the solar system with a subsurface ocean, such as Europa and Enceladus, are the targets of future space missions that search for potential extraterrestrial life forms.
Francisco Calapez   +6 more
doaj   +1 more source

THE ROLE OF CARBON IN EXTRASOLAR PLANETARY GEODYNAMICS AND HABITABILITY [PDF]

open access: yesThe Astrophysical Journal, 2014
9 pages, 9 figures; Formatting fixed for figure ...
Cayman T. Unterborn   +4 more
openaire   +3 more sources

Gypsum Gardens: Self‐Assembled Tubular Structures of Calcium Sulfate with Relevance for the Detection of Extraterrestrial Life

open access: yesAngewandte Chemie International Edition, EarlyView.
Chemical gardens are self‐assembled architectures with “life‐like” morphologies that form in the absence of any biological activity. Here we show that such structures can also be obtained by contacting reservoirs of calcium and sulfate ions, under conditions that plausibly emulate those prevailing on early Mars.
Selina Reigl   +5 more
wiley   +1 more source

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