Results 71 to 80 of about 24,229 (205)

Statistics and Habitability of F-type Star–Planet Systems

open access: yesThe Astrophysical Journal Supplement Series
F-type star–planet systems represent an intriguing case for habitability studies. Although F-type stars spend considerably less time on the main sequence (MS) than G-, K-, and M-type stars, they still offer a unique set of features, allowing for the ...
Shaan D. Patel   +2 more
doaj   +1 more source

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

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

Oxygen False Positives on Habitable Zone Planets Around Sun‐Like Stars

open access: yesAGU Advances, 2021
Oxygen is a promising exoplanet biosignature due to the evolutionary advantage conferred by harnessing starlight for photosynthesis, and the apparent low likelihood of maintaining oxygen‐rich atmospheres without life.
Joshua Krissansen‐Totton   +3 more
doaj   +1 more source

Stability of additional planets in and around the habitable zone of the HD 47186 Planetary System [PDF]

open access: yes, 2009
We study the dynamical stability of an additional, potentially habitable planet in the HD 47186 planetary system. Two planets are currently known in this system: a "hot Neptune" with a period of 4.08 days and a Saturn-mass planet with a period of 3.7 years. Here we consider the possibility that one or more undetected planets exist between the two known
arxiv   +1 more source

Water Evolution and Inventories of Super-Earths Orbiting Late M Dwarfs

open access: yesThe Astrophysical Journal
Super-Earths orbiting M dwarf stars may be the most common habitable planets in the Universe. However, their habitability is threatened by intense irradiation from their host stars, which drives the escape of water to space and can lead to surface ...
Keavin Moore   +3 more
doaj   +1 more source

Discoveries and Other Information in Physics and Astronomy of the Last Decade, which Have a Potential to Influence our View on the Universe

open access: yesCommunications, 2017
In the last decade, natural sciences (sometimes called exact sciences) have nearly every week brought some discoveries or important news, which have consequences on our understanding of the world and the whole Universe, its past and future, and which may
Emil Betak, Franc Cvelbar
doaj   +1 more source

Multiverse Predictions for Habitability: Number of Potentially Habitable Planets

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   +1 more source

Dynamical Viability Assessment for Habitable Worlds Observatory Targets

open access: yesThe Astronomical Journal
Exoplanetary science is increasingly prioritizing efforts toward direct imaging of planetary systems, with emphasis on those that may enable the detection and characterization of potentially habitable exoplanets.
Stephen R. Kane   +4 more
doaj   +1 more source

Habitable Zones in Extrasolar Planetary Systems [PDF]

open access: yes, 2002
If we ask the question about the possible existence of the life outside the Earth, we first have to determine the habitable zone (HZ) for our solar system. The HZ of distances between a main sequence star and an Earth-like planet is roughly defined as the range of mean orbital radii which imply moderate planetary surface temperatures suitable for the ...
Franck, S.   +5 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy