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Gliese 581c / ˈ ɡ l iː z ə / (Gl 581c or GJ 581c) is an exoplanet orbiting within the Gliese 581 system. It is the second planet discovered in the system and the third in order from the star . With a mass about 6.8 times that of the Earth , it is classified as a super-Earth (a category of planets with masses greater than Earth's up to ten ...
Gliese 581g, unofficially known as Zarmina's World, [28] was a candidate exoplanet claimed to orbit Gliese 581, but its existence was ultimately refuted. [45] It was thought to orbit with a period of 36.6 days at a distance of 0.146 AU, placing it within the habitable zone, and to have a minimum mass of 3.1 M 🜨 .
Gliese 581d / ˈ ɡ l iː z ə / (often shortened to Gl 581d or GJ 581d) is a doubtful, and frequently disputed, exoplanet candidate orbiting within the Gliese 581 system, approximately 20.4 light-years away in the Libra constellation. It was the third planet claimed in the system and the fourth (in a 4-planet model) or fifth (in a disproven 5 ...
Gliese 581g / ˈ ɡ l iː z ə / was a candidate exoplanet postulated to orbit within the Gliese 581 system, twenty light-years from Earth. [9] It was discovered by the Lick–Carnegie Exoplanet Survey, and was the sixth planet claimed to orbit the star; [10] however, its existence could not be confirmed by the European Southern Observatory (ESO) / High Accuracy Radial Velocity Planet Searcher ...
Later work suggests that Gliese 581 c would probably be too hot for liquid water. It was then suggested that Gliese 581 d might be warm enough for oceans if a greenhouse effect was operating. [23] Gliese 581 d is eight times the mass of the Earth and might have a thick atmosphere. Gliese 581 d looks an even better candidate
Gliese 581b or Gl 581b is an exoplanet orbiting within the Gliese 581 system, located 20.5 light-years (6.3 parsecs) away from Earth in the Libra constellation. It is the first planet discovered of three confirmed in the system so far, and the second in order from the star.
Scientists have found a new Earth-like planet that could support alien life – just 40 light-years away.. The planet is a remarkable discovery in the search for habitable worlds: it is slightly ...
Gliese 581 is roughly 0.4 times as big as Sol, but only 0.07 times as far from 581 c, so it appears quite large, 2.85 degrees of arc, about 5.7 times as big as Sol seen from Earth. 581 b, 0.003 times as big as Sol, when transiting, would be about 0.03 AU from 581 c; if Neptune-sized, that means 0.05 degrees, a tenth as big as the moon seen from ...