Gliese 581 G (pronounced /ˈɡliːzə/) or Gl 581 G, named Flora, after the Roman goddess of flowers, is one of six extrasolar planets found around Gliese 581, an M3V red dwarf star approximately 20.5 light-years away from Earth in the constellation of Libra. The planet lies near the middle of the Goldilocks zone, or habitable zone of its parent star, providing for the presence of liquid water. The discovery of Gliese 581 G was announced in September 2010, and was believed to be the first Goldilocks planet ever found, the most Earth-like planet, and the best exoplanet candidate with the potential for harboring life found at the time. The planet was detected using radial velocity measurements combining the data from the HIRES instrument of the Keck 1 telescope and the HARPS instrument of ESO's
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| - Gliese 581 G (pronounced /ˈɡliːzə/) or Gl 581 G, named Flora, after the Roman goddess of flowers, is one of six extrasolar planets found around Gliese 581, an M3V red dwarf star approximately 20.5 light-years away from Earth in the constellation of Libra. The planet lies near the middle of the Goldilocks zone, or habitable zone of its parent star, providing for the presence of liquid water. The discovery of Gliese 581 G was announced in September 2010, and was believed to be the first Goldilocks planet ever found, the most Earth-like planet, and the best exoplanet candidate with the potential for harboring life found at the time. The planet was detected using radial velocity measurements combining the data from the HIRES instrument of the Keck 1 telescope and the HARPS instrument of ESO's
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| - Varying non-sentient species
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| - Mediterranean
- Tundra
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- Taiga
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*80% nitrogen
*19% oxygen
*3% carbon dioxide
*1% other gases
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abstract
| - Gliese 581 G (pronounced /ˈɡliːzə/) or Gl 581 G, named Flora, after the Roman goddess of flowers, is one of six extrasolar planets found around Gliese 581, an M3V red dwarf star approximately 20.5 light-years away from Earth in the constellation of Libra. The planet lies near the middle of the Goldilocks zone, or habitable zone of its parent star, providing for the presence of liquid water. The discovery of Gliese 581 G was announced in September 2010, and was believed to be the first Goldilocks planet ever found, the most Earth-like planet, and the best exoplanet candidate with the potential for harboring life found at the time. The planet was detected using radial velocity measurements combining the data from the HIRES instrument of the Keck 1 telescope and the HARPS instrument of ESO's 3.6m telescope at La Silla Observatory. Flora has a mass of three to four times that of the Earth and an orbital period of just under 37 days. Steven Vogt, the co-discoverer, unofficially named the planet "Zarmina", after his wife. It was officially named "Flora", by NASA, in 2030. Gliese 581 G was expected to be tidally locked to its star, just as our moon is to the Earth; the length of Gliese 581 G's day would then precisely match the length of its year. With one side of the planet always facing the star, continuous Earth-like temperatures were imaginable in the area between the bright and the dark side. However, this was untrue. Flora features a rotation lasting 26.4 hours, giving the entire world an even night/day climate and temperature.
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