Results 31 to 40 of about 166,554 (139)

Consistently Simulating a Wide Range of Atmospheric Scenarios for K2-18b with a Flexible Radiative Transfer Module

open access: yes, 2020
The atmospheres of small, potentially rocky exoplanets are expected to cover a diverse range in composition and mass. Studying such objects therefore requires flexible and wide-ranging modeling capabilities.
Godolt, M.   +8 more
core   +1 more source

Bistability of the climate around the habitable zone: a thermodynamic investigation

open access: yes, 2012
The goal of this paper is to explore the potential multistability of the climate of a planet around the habitable zone. A thorough investigation of the thermodynamics of the climate system is performed for very diverse conditions of energy input and ...
Boschi, Robert   +2 more
core   +1 more source

Earth as a Hybrid Planet - The Anthropocene in an Evolutionary Astrobiological Context

open access: yes, 2017
We develop a classification scheme for the evolutionary state of planets based on the non-equilibrium thermodynamics of their coupled systems, including the presence of a biosphere and the possibility of what we call an agency-dominated biosphere (i.e ...
Alberti, Marina   +2 more
core   +1 more source

MOA-2020-BLG-208Lb: Cool Sub-Saturn-mass Planet within Predicted Desert

open access: yesThe Astronomical Journal, 2023
We analyze the MOA-2020-BLG-208 gravitational microlensing event and present the discovery and characterization of a new planet, MOA-2020-BLG-208Lb, with an estimated sub-Saturn mass.
Greg Olmschenk   +82 more
doaj   +1 more source

The identification and biogeochemical interpretation of fossil magnetotactic bacteria [PDF]

open access: yes, 2008
Magnetotactic bacteria, which most commonly live within the oxic-anoxic transition zone (OATZ) of aquatic environments, produce intracellular crystals of magnetic minerals, specifically magnetite or greigite.
Kirschvink, Joseph L., Kopp, Robert E.
core   +1 more source

A protocol for the intercomparison of marine fishery and ecosystem models: Fish-MIP v1.0 [PDF]

open access: yesGeoscientific Model Development, 2018
Model intercomparison studies in the climate and Earth sciences communities have been crucial to building credibility and coherence for future projections.
D. P. Tittensor   +50 more
doaj   +1 more source

Helium Depletion in Escaping Atmospheres of Sub-Neptunes: A Signature of Primary-to-secondary Transition

open access: yesThe Astrophysical Journal
Short-period sub-Neptunes are common in extrasolar systems. These sub-Neptunes are generally thought to have primary atmospheres of protoplanetary-disk gas origin.
Issei Kobayashi   +3 more
doaj   +1 more source

Hegel's Eurocentric Triads of Dialectics and its Transformation to Kelly's Planetary Paradigm [PDF]

open access: yes, 2018
This article introduces Hegel's Eurocentric philosophy of dialectics in the 19th century and its transformation to Kelly’s planetary paradigm at the turn of the 20th-21st century.
ma, Z. G.
core   +1 more source

Natural Transfer of Viable Microbes in Space from Planets in the Extra-Solar Systems to a Planet in our Solar System and Vice-Versa

open access: yes, 2008
We investigate whether it is possible that viable microbes could have been transported to Earth from the planets in extra-solar systems by means of natural vehicles such as ejecta expelled by comet or asteroid impacts on such planets.
Cucinotta, Francis A.   +9 more
core   +1 more source

Evaluation of Geohazards Research in the World and Pacific Region: A Comparative Bibliometric Study

open access: yesIraqi Geological Journal
Geohazards are natural phenomena that endanger infrastructure, the environment, and human activity. Understanding and mitigating them is crucial for public safety, disaster preparedness, and sustainable land and resource management.
Khoirun Nisa, Nadi Suprapto, Iqbal Rizki
doaj   +1 more source

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