Results 21 to 30 of about 19,355 (320)
The Planetary Science Journal, 2023 Low water activity limits the habitability of aqueous environments, and salts present on Mars are known to reduce water activity. As environmental brines are not pure solutions of a single salt, predicting their water activity is difficult without direct
Adam H. Stevens, Charles S. Cockell
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Effects of Extreme Obliquity Variations on the Habitability of Exoplanets [PDF]
, 2014 We explore the impact of obliquity variations on planetary habitability in hypothetical systems with high mutual inclination. We show that large amplitude, high frequency obliquity oscillations on Earth-like exoplanets can suppress the ice-albedo ...
Armstrong, J. C. +5 more
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The Direct Mid-infrared Detectability of Habitable-zone Exoplanets around Nearby Stars
The Astronomical Journal, 2023 Giant planets within the habitable zones of the closest several stars can currently be imaged with ground-based telescopes. Within the next decade, the Extremely Large Telescopes (ELTs) will begin to image the habitable zones of a greater number of ...
Zach Werber, Kevin Wagner, Dániel Apai
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Geophysical and Atmospheric Evolution of Habitable Planets [PDF]
Astrobiology, 2010 The evolution of Earth-like habitable planets is a complex process that depends on the geodynamical and geophysical environments. In particular, it is necessary that plate tectonics remain active over billions of years. These geophysically active environments are strongly coupled to a planet's host star parameters, such as mass, luminosity and activity,
Lammer, Helmut +43 more
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Extrasolar Trojan planets close to habitable zones [PDF]
Astronomy & Astrophysics, 2004 4 pages, 4 figures, submitted to A& ...
Dvorak, Rudolf +3 more
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The Detection and Characterization of Extrasolar Planets
Challenges, 2014 We have now confirmed the existence of > 1800 planets orbiting stars other thanthe Sun; known as extrasolar planets or exoplanets. The different methods for detectingsuch planets are sensitive to different regions of parameter space, and so, we are ...
Ken Rice
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A Catalog of Habitable Zone Exoplanets
The Astronomical Journal, 2023 The search for habitable planets has revealed many planets that can vary greatly from an Earth analog environment. These include highly eccentric orbits, giant planets, different bulk densities, relatively active stars, and evolved stars.
Michelle L. Hill +7 more
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The extrasolar planet Gliese 581d: a potentially habitable planet? [PDF]
Astronomy & Astrophysics, 2010 The planetary system around the M star Gliese 581 contains at least three close-in potentially low-mass planets, GL 581 c, d, and e. In order to address the question of the habitability of GL 581 d, we performed detailed atmospheric modeling studies for several planetary scenarios.
★ von Paris +17 more
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Survival of habitable planets in unstable planetary systems
, 2016 Many observed giant planets lie on eccentric orbits. Such orbits could be the result of strong scatterings with other giant planets. The same dynamical instability that produces these scatterings may also cause habitable planets in interior orbits to ...
Carrera, Daniel +2 more
core +1 more source
, 2012 Given the considerable percentage of stars that are members of binaries or stellar multiples in the Solar neighborhood, it is expected that many of these binaries host planets, possibly even habitable ones.
Eggl, Siegfried +2 more
core +6 more sources