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planets orbiting gliese 581, named gliese 581 C (blackbody 40 C, the same as venus) and D (blackbody -18 C, same as earth) could be in the habitable zone of the star. however, they are superdense at being about 7 g/cm^3 (this opposed to earth at 5.5g/cm^3) their minimum masses are 5.5 and 7.1 earth masses respectively.
It is a planet only about 3 times the mass of Earth orbiting in the habitable zone of the star Gliese 581. It is widely considered the most likely extrasolar planet to harbor life.
Gliese 581 e is a planet with a mass similar to Earth and within the "habitable zone". See related links for more information
which exoplanet is 'THE exoplanet'?
The star Gliese 581 is a red dwarf star, 20.3 light-years away. Recent observations indicate that a number of planets orbit this star, including at least one of approximately Earth's mass that astronomers say may be within the habitable zone, meaning that the temperature of the planet's surface may - MAY - allow water to exist in a liquid state. It's important to remember that much of the speculation about Gliese 581g is EXTREMELY speculative. We don't know what sort of surface the planet might have, nor anything about the atmosphere; the ONLY things we know even approximately are the mass and the orbit. At a first glance, it might seem like this could be a potentially habitable world - but notice all of the weasel-words that I used. We don't have ANY idea of the conditions there.
Yes mostly orbiting a red dwarf gliese 581g (pronunciation "gliza" 581g)which is orbiting a star gliese 581 a red dwarf located 22 light years. and another planet probably called as (earth' cousin) the first earth sized habitable planet called kepler186f located 490 light years orbiting a red dwarf kepler 186
theoretically yeah 'Gliese 581g is in the 'Goldilocks zone' of its solar system, where liquid water could exist, and is a strong contender to be a habitable world' it orbits around a red dwarf star called Gliese 581 and is 20 light years (over 117 trillion miles) away.
It is feasible, yes, though there are many technical problems that would have to be overcome first. Mars is not habitable to earthlings as it is, but it is potentially the most habitable place in our solar system after earth.
We do not know enough about conditions on any exoplanet to determine if any would be suitable for humans.
Gliese 581g lies in a zone called "the Goldilocks zone" or habitable zone [See related question]. It's an area in a planets orbit, where liquid water is likely to occur and thus harbour life. It's not too hot or too cold. (As in the porridge) It can also refer to a planet that is close to the size of the Earth.
5x the mass of earth
20 light years