Results 51 to 60 of about 171,532 (223)

Setting the Stage for Habitable Planets

open access: yesLife, 2014
Our understanding of the processes that are relevant to the formation and maintenance of habitable planetary systems is advancing at a rapid pace, both from observation and theory.
Guillermo Gonzalez
doaj   +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

Carbonation and decarbonation reactions: Implications for planetary habitability

open access: yesAmerican Mineralogist, 2019
The geologic carbon cycle plays a fundamental role in controlling Earth’s climate and habitability. For billions of years, stabilizing feedbacks inherent in the cycle have maintained a surface environment that could sustain life.
E. M. Stewart   +7 more
semanticscholar   +1 more source

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

open access: yesThe 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   +5 more
doaj   +1 more source

The Carbon-deficient Evolution of TRAPPIST-1c

open access: yesThe 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   +3 more
doaj   +1 more source

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

open access: yesFrontiers 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

RAPID WATER LOSS CAN EXTEND THE LIFETIME OF PLANETARY HABITABILITY [PDF]

open access: yes, 2015
Two habitable planetary states are proposed: an aqua planet like the Earth and a land planet that has a small amount of water. Land planets keep liquid water under larger solar radiation compared to aqua planets. Water loss may change an aqua planet into
T. Kodama, H. Genda, Y. Abe, K. Zahnle
semanticscholar   +1 more source

Uncertainty Quantification in Planetary Thermal History Models: Implications for Hypotheses Discrimination and Habitability Modeling [PDF]

open access: yesAstrophysical Journal, 2019
Multiple hypotheses/models have been put forward regarding Earth’s cooling history. Searching for life beyond Earth has brought these models into a new light as they connect to an energy source that life can tap.
J. Seales, A. Lenardic
semanticscholar   +1 more source

Double Trouble: Two Transits of the Super-Earth GJ 1132 b Observed with JWST NIRSpec G395H

open access: yesThe Astrophysical Journal Letters, 2023
The search for rocky planet atmospheres with JWST has focused on planets transiting M dwarfs. Such planets have favorable planet-to-star size ratios, enhancing the amplitude of atmospheric features.
E. M. May   +21 more
doaj   +1 more source

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

open access: yesNature 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   +7 more
doaj   +1 more source

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