Results 211 to 220 of about 171,532 (223)

Habitability of Enceladus: Planetary Conditions for Life

Origins of Life and Evolution of Biospheres, 2008
The prolific activity and presence of a plume on Saturn's tiny moon Enceladus offers us a unique opportunity to sample the interior composition of an icy satellite, and to look for interesting chemistry and possible signs of life. Based on studies of the potential habitability of Jupiter's moon Europa, icy satellite oceans can be habitable if they are ...
Joseph L. Kirschivnk, Yuk L. Yung, Mao-Chang Liang, Mao-Chang Liang, Mao-Chang Liang, Christopher D. Parkinson   +5 more
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Stellar-Planetary Relations: Atmospheric Stability as a Prerequisite for Planetary Habitability

Celestial Mechanics and Dynamical Astronomy, 2005
The region around a star where a life-supporting biosphere can evolve is the so-called Habitable Zone (HZ). The current definition of the HZ is based only on the mass-luminosity relation of the star and climatological and meteorological considerations of Earth-like planets, but neglects atmospheric loss processes due to the interaction with the stellar
Helmut Lammer, Helfried K. Biernat, Yu. N. Kulikov, Nikolai V. Erkaev, M. Leitner, Thomas Penz   +5 more
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Habitability and biogenic effects on planetary atmospheres

International Journal of Applied Science and Engineering Research, 2012
The physical characteristics of habitable planets have been critically examined considering the various properties of solar-system with special reference to Earth. The consequences of abiotic chemical evolution have been focused with an emphasis to the theories of life formation. Also roadmaps for the habitability of planets have been sketched for a re-
A. B. Bhattacharya, B. Raha
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The habitability of eccentric planetary orbits

2016
The huge number of exo-planets discovered so far show an unexpected diversity of planetary systems where most planets indicate eccentricity motion. Since Earth is still the only habitable planet we know and the planetary motion in our Solar system is nearly circular we study possible constraints of habitability in case of eccentric planetary motion ...
Pilat-Lohinger, Elke, Lammer, Helmut, Bancelin, David, Erkaev, Nikolai V., Bazsó, Á., Eggl, Siegfried   +5 more
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Planetary habitability: is Earth commonplace in the Milky Way?

Naturwissenschaften, 2001
Is there life beyond planet Earth? This is one of the grand enigmas which humankind tries to solve through scientific research. Recent progress in astronomical measurement techniques has confirmed the existence of a multitude of extra-solar planets. On the other hand, enormous efforts are being made to assess the possibility of life on Mars.
Franck, S., Block, A., von Bloh, W., Bounama, C., Garrido, I., Schellnhuber, H.   +5 more
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Out-of-equilibrium systems and planetary habitability

2014
The VI workshop of the “Thermodynamics, disequilibrium and evolution” Focus Group was held in the beautiful setting of Villa il Gioiello. This meeting focused on out-of- equilibrium systems, which could provide the conditions for the emergence of life, and on the use of thermodynamic instruments for the study of planetary habitability.
E. Simoncini, John Robert Brucato
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6. Planetary climate and habitability

2021
‘Planetary climate and habitability’ studies planetary climate, particularly the way an atmosphere affects temperature and a planet's habitability. The entire temperature profile, from the planet's centre to the tenuous outer reaches of its atmosphere (if it has one), is of importance.
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Planetary Environmental Signatures for Habitability and Life

2008
In the vast blackness of space, our home planet is a single sparkling oasis of life. Whether the Universe harbors other worlds that can support even simple life is a question that has been pondered, yet remained unanswered, for over two thousand years.
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Planetary Habitable Zones: The Spatial Distribution of Life on Planetary Bodies

2001
In this work, the biophysical requirements of microbial life and the mean global physical environment of Earth and Mars are compared to suggest potential habitable zones on both planets. On average, life on Earth is restricted to the troposphere up to 8 km above mean sea level.
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Planetary Habitable Zones on Earth and Mars

2000
The biosphere includes part of the atmosphere, hydrosphere and lithosphere. Microbial life is possible within this region due to the availability of liquid water, an energy source, and the right environment. This paper is focused in the necessary physical environment state for microbial growth and how that relates to Earth’s and Mars’current ...
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