Results 11 to 20 of about 4,672 (105)

Multiverse Predictions for Habitability: Number of Potentially Habitable Planets [PDF]

open access: yesUniverse, 2019
How good is our universe at making habitable planets? The answer to this depends on which factors are important for life: Does a planet need to be Earth mass? Does it need to be inside the temperate zone? are systems with hot Jupiters habitable? Here, we
McCullen Sandora
doaj   +2 more sources

Ultraviolet Photometry and Habitable Zones of over 2700 Planet-hosting Stars

open access: yesThe Astrophysical Journal Supplement Series
The ongoing discovery of exoplanets has sparked significant interest in finding suitable worlds that could potentially support life. Stellar ultraviolet (UV; 100–3000 Å) radiation may play a crucial role in determining the habitability of their planets ...
Xue Li   +3 more
doaj   +2 more sources

Exploring the Effects of Stellar Magnetism on the Potential Habitability of Exoplanets

open access: yesThe Astrophysical Journal
Considerable interest has centered on Earth-like planets orbiting in the circumstellar habitable zone (CHZ) of its star. However, the potential habitability of an exoplanet depends upon a number of additional factors, including the presence and strength ...
Anthony S. Atkinson   +2 more
doaj   +2 more sources

Carbon Cycle Instability for High-CO2 Exoplanets: Implications for Habitability

open access: yesThe Astrophysical Journal
Implicit in the definition of the classical circumstellar habitable zone (HZ) is the hypothesis that the carbonate-silicate cycle can maintain clement climates on exoplanets with land and surface water across a range of instellations by adjusting ...
R. J. Graham, R. T. Pierrehumbert
doaj   +2 more sources

Habitability in 4D: Predicting the Climates of Earth Analogs across Rotation and Orbital Configurations

open access: yesThe Astrophysical Journal
Earth-like planets in the circumstellar habitable zone (HZ) may have dramatically different climate outcomes depending on their spin–orbit parameters, altering their habitability for life as we know it.
Arthur D. Adams   +4 more
doaj   +2 more sources

The ultraviolet habitable zone of exoplanets [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2023
The dozens of rocky exoplanets discovered in the Circumstellar Habitable Zone (CHZ) currently represent the most suitable places to host life as we know it outside the Solar System. However, the presumed presence of liquid water on the CHZ planets does
R. Spinelli   +4 more
semanticscholar   +1 more source

Tracing the inner edge of the habitable zone with sulfur chemistry. [PDF]

open access: yesSci Adv
The circumstellar liquid-water habitable zone guides our search for potentially inhabited exoplanets but remains observationally untested. We show that the inner edge of the habitable zone can now be mapped among exoplanets using their lack of surface ...
Jordan S, Shorttle O, Rimmer PB.
europepmc   +2 more sources

A Habitable-zone Earth-sized Planet Rescued from False Positive Status [PDF]

open access: yesAstrophysical Journal, 2020
We report the discovery of an Earth-sized planet in the habitable zone of a low-mass star called Kepler-1649. The planet, Kepler-1649 c, is 1.06 times the size of Earth and transits its 0.1977 ± 0.0051 “mid” M-dwarf host star every 19.5 days. It receives
A. Vanderburg   +11 more
semanticscholar   +1 more source

X-Ray-luminous Supernovae: Threats to Terrestrial Biospheres

open access: yesThe Astrophysical Journal, 2023
The spectacular outbursts of energy associated with supernovae (SNe) have long motivated research into their potentially hazardous effects on Earth and analogous environments.
Ian R. Brunton   +4 more
doaj   +1 more source

Close stellar encounters kicking planets out of habitable zone in various stellar environments

open access: yes, 2021
Continuous habitability of a planet is a critical condition for advanced forms of life to appear, but it can be endangered by astronomical events such as stellar encounters.
Behzad Bojnordi Arbab, S. Rahvar
semanticscholar   +1 more source

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