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  2. Gliese 581d - Wikipedia

    en.wikipedia.org/wiki/Gliese_581d

    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 ...

  3. Gliese 581 - Wikipedia

    en.wikipedia.org/wiki/Gliese_581

    Gliese 581d is a possible candidate exoplanet thought to orbit Gliese 581, which is frequently heavily disputed, [45] [46] [48] as it has been argued by a number of studies to be a false positive originating from stellar activity.

  4. Gliese 581g - Wikipedia

    en.wikipedia.org/wiki/Gliese_581g

    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 ...

  5. Tidal locking - Wikipedia

    en.wikipedia.org/wiki/Tidal_locking

    Gliese 581c, [46] Gliese 581g, [47] [48] Gliese 581b, [49] and Gliese 581e [50] may be tidally locked to their parent star Gliese 581. Gliese 581d is almost certainly captured either into the 2:1 or the 3:2 spin–orbit resonance with the same star. [51] All planets in the TRAPPIST-1 system are likely to be tidally locked. [52] [53]

  6. Gliese 581c - Wikipedia

    en.wikipedia.org/wiki/Gliese_581c

    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 ...

  7. Talk:Gliese 581 - Wikipedia

    en.wikipedia.org/wiki/Talk:Gliese_581

    This Wikipedia article states that Gliese 581 d is "just inside the habitable zone," yet the release from Keck states that 581 g is in the middle of the habitable zone. Gliese 581 d has a period of 66.8 days, which would mean that it orbits outside 581 g's orbit, since 581 g's orbital period is 37 days.

  8. Scientists find Earth-like planet that could be home to alien ...

    www.aol.com/scientists-earth-planet-could-home...

    Gliese 12 b, which orbits a cool, red dwarf star located just 40 light-years away, promises to tell astronomers more about how planets close to their stars retain or lose their atmospheres. In ...

  9. List of exoplanet firsts - Wikipedia

    en.wikipedia.org/wiki/List_of_exoplanet_firsts

    Gliese 581d: Gliese 581: 2007 Orbits a red dwarf star. This planet orbits a little too far from the star, but the greenhouse effect would be enough to make this planet habitable. The other ocean planet candidate, GJ 1214 b, was detected by transit in which the density was calculated and determined that this planet is an ocean planet. Now disputed.