Results 51 to 60 of about 189,491 (285)

Physical constraints on the likelihood of life on exoplanets [PDF]

open access: yes, 2017
One of the most fundamental questions in exoplanetology is to determine whether a given planet is habitable. We estimate the relative likelihood of a planet's propensity towards habitability by considering key physical characteristics such as the role of
Lingam, Manasvi, Loeb, Abraham
core   +1 more source

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.
Van Laerhoven, Christa   +2 more
openaire   +2 more sources

Exoplanet interiors and habitability [PDF]

open access: yes, 2019
More than 1000 exoplanets with a radius smaller than twice that of the Earth are currently known, mainly thanks to space missions dedicated to the search of exoplanets.
Hoolst, Tim Van   +2 more
core   +1 more source

Machine-learning Inferences of the Interior Structure of Rocky Exoplanets from Bulk Observational Constraints

open access: yesThe Astrophysical Journal Supplement Series, 2023
Characterizing the interiors of rocky exoplanets is important to understand planetary populations and further investigate planetary habitability. New observable constraints and inference techniques have been explored for this purpose.
Yong Zhao, Dongdong Ni, Zibo Liu
doaj   +1 more source

Earth-like Habitats in Planetary Systems

open access: yes, 2014
Understanding the concept of habitability is related to an evolutionary knowledge of the particular planet-in-question. Additional indications so-called "systemic aspects" of the planetary system as a whole governs a particular planet's claim on ...
Bitsch, Bertram   +10 more
core   +1 more source

Ultradeep Microbial Communities at 4.4 km within Crystalline Bedrock: Implications for Habitability in a Planetary Context

open access: yesLife, 2020
The deep bedrock surroundings are an analog for extraterrestrial habitats for life. In this study, we investigated microbial life within anoxic ultradeep boreholes in Precambrian bedrock, including the adaptation to environmental conditions and lifestyle
L. Purkamo   +4 more
semanticscholar   +1 more source

Planetary Magnetism as a Parameter in Exoplanet Habitability [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
Evidence from the solar system suggests that, unlike Venus and Mars, the presence of a strong magnetic dipole moment on Earth has helped maintain liquid water on its surface. Therefore, planetary magnetism could have a significant effect on the long-term
Sarah Mcintyre   +2 more
semanticscholar   +1 more source

Young M-dwarfs flare activity model: Towards better exoplanetary atmospheric characterisation

open access: yesAstronomy & Astrophysics
Context. Stellar flares can significantly influence the atmospheres and habitability of orbiting exoplanets, especially around young and active M dwarfs.
Mamonova E.   +4 more
doaj   +1 more source

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

CD-HPF: New Habitability Score Via Data Analytic Modeling

open access: yes, 2016
The search for life on the planets outside the Solar System can be broadly classified into the following: looking for Earth-like conditions or the planets similar to the Earth (Earth similarity), and looking for the possibility of life in a form known or
Agrawal, Surbhi   +5 more
core   +1 more source

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