Habitability and Climate
The study of Gliese 581 c by the von Bloh et al. team has been quoted as concluding "The super-Earth Gl 581c is clearly outside the habitable zone, since it is too close to the star." The study by Selsis et al. claims even "a planet in the habitable zone is not necessarily habitable" itself, and this planet "is outside what can be considered the conservative habitable zone" of the parent star, and further that if there was any water there then it was lost when the red dwarf was a strong X-ray and EUV emitter, it could have surface temperatures ranging from 700 K to 1000 K (430 to 730 °C), like Venus today. Temperature speculations by other scientists were based on the temperature of (and heat from) the parent star Gliese 581 and have been calculated without factoring in the margin of error (96 °C/K) for the star's temperature of 3432 K to 3528 K, which leads to a large irradiance range for the planet, even before eccentricity is considered.
Read more about this topic: Gliese 581 C
Other articles related to "habitability":
... and lifespan are all factors in stellar habitability ... It is also unlike many stellar systems in that it only has one star in it (see Planetary habitability, under the binary systems section) ... lock planets within their habitable zone, along with other problems (see Habitability of red dwarf systems) ...
... Violation of the warranty of habitability results in constructive eviction, whereby the landlord or lessor has, in effect, evicted the tenant or lessee ...
... planets and moons, Dirk Schulze-Makuch and other scientists have developed a Planetary Habitability Index which takes into account factors including characteristics of the surface and ... scientists found that Titan has the highest current habitability rating of any known world, other than Earth ...
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