Results 1 to 10 of about 13,340 (290)

On the Habitability of Aquaplanets [PDF]

open access: yesChallenges, 2014
An Aquatic Habitability Index is proposed, based on Quantitative Habitability Theory, and considering a very general model for life. It is a primary habitability index, measuring habitability for phytoplankton in the first place.
Rolando Cardenas   +3 more
doaj   +4 more sources

Habitable Climates [PDF]

open access: bronze, 2007
According to the standard liquid-water definition, the Earth is only partially habitable. We reconsider planetary habitability in the framework of energy-balance models, the simplest seasonal models in physical climatology, to assess the spatial and temporal habitability of Earth-like planets.
David S. Spiegel   +2 more
arxiv   +3 more sources

Multiverse Predictions for Habitability: Stellar and Atmospheric Habitability

open access: yesUniverse, 2022
Stellar activity and planetary atmospheric properties have the potential to strongly influence habitability. To date, neither have been adequately studied in the multiverse context, so there has been no assessment of how these effects impact the ...
McCullen Sandora   +3 more
doaj   +1 more source

Hard rock dark biosphere and habitability

open access: yesFrontiers in Astronomy and Space Sciences, 2023
The discovery that most of the prokaryotic diversity and biomass on Earth resides in the deep subsurface, calls for an improved definition of habitability, which should consider the existence of dark biospheres in other planets and moons of the Solar ...
Cristina Escudero   +2 more
doaj   +1 more source

Multiverse Predictions for Habitability: Planetary Characteristics

open access: yesUniverse, 2022
Recent detections of potentially habitable exoplanets around sunlike stars demand increased exploration of the physical conditions that can sustain life, by whatever methods available.
McCullen Sandora   +3 more
doaj   +1 more source

Terminator Habitability: The Case for Limited Water Availability on M-dwarf Planets

open access: yesThe Astrophysical Journal, 2023
Rocky planets orbiting M-dwarf stars are among the most promising and abundant astronomical targets for detecting habitable climates. Planets in the M-dwarf habitable zone are likely synchronously rotating, such that we expect significant day–night ...
Ana H. Lobo   +3 more
doaj   +1 more source

The ETNA mission concept: Assessing the habitability of an active ocean world

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Enceladus is an icy world with potentially habitable conditions, as suggested by the coincident presence of a subsurface ocean, an active energy source due to water-rock interactions, and the basic chemical ingredients necessary for terrestrial life ...
Ariel N. Deutsch   +16 more
doaj   +1 more source

The Abundance of Belatedly Habitable Planets and Ambiguities in Definitions of the Continuously Habitable Zone [PDF]

open access: yes, 2023
A planet's history dictates its current potential to host habitable conditions and life. The concept of the Continuously Habitable Zone (CHZ) has been used to define the region around a star most likely to host planets with long-term habitability. However, definitions of the CHZ vary in the literature and often conflict with each other. Calculating the
arxiv   +1 more source

A revised lower estimate of ozone columns during Earth’s oxygenated history

open access: yesRoyal Society Open Science, 2022
The history of molecular oxygen (O2) in Earth’s atmosphere is still debated; however, geological evidence supports at least two major episodes where O2 increased by an order of magnitude or more: the Great Oxidation Event (GOE) and the Neoproterozoic ...
G. J. Cooke   +4 more
doaj   +1 more source

The collection of environmental data in the analysis of the hygrothermal and air quality behavior of a cave house in Almería = La toma de datos medioambientales en el análisis del comportamiento higrotérmico y de calidad del aire de una casa cueva en Almería

open access: yesBuilding & Management, 2021
The Technical Building Code (CTE) is the regulatory framework that regulates the basic quality requirements that buildings must meet. The basic documents of the CTE, characterize the basic requirements (energy saving, protection against humidity, indoor ...
Luis Jiménez López
doaj   +1 more source

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