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List of extrasolar candidates for liquid water
The following list contains candidates from the list of confirmed objects that meet the following criteria:
Confirmed object orbiting within a circumstellar habitable zone of Earth mass or greater (because smaller objects may not have the gravitational means to retain water) but not a star
Has been studied for more than a year
Confirmed surface with strong evidence for it being either solid or liquid
Water vapour detected in its atmosphere
Gravitational, radio or differentation models that predict a wet stratum
55 Cancri f
With a mass half that of Saturn, 55 Cancri f is likely to be a gas giant with no solid surface. It orbits in the so-called “habitable zone,” which means that liquid water could exist on the surface of a possible moon. ]
Proxima Centauri b
Proxima Centauri b is an exoplanet orbiting in the habitable zone of the red dwarfstar Proxima Centauri, which is the closest star to the Sun and part of a triple star system. It is located about 4.2 light-years from Earth in the constellation of Centaurus, making it the closest known exoplanet to the Solar System.
Gliese 581c
Gliese 581c gained interest from astronomers because it was reported to be the first potentially Earth-like planet in the habitable zone of its star, with a temperature right for liquid water on its surface, and by extension, potentially capable of supporting extremophile forms of Earth-like life.
Gliese 667 Cc
Gliese 667 Cc is an exoplanet orbiting within the habitable zone of the red dwarf star Gliese 667 C, which is a member of the Gliese 667 triple star system, approximately 23.62 light-years away in the constellation of Scorpius.
Gliese 1214 b
Gliese 1214 b is an exoplanet that orbits the star Gliese 1214, and was discovered in December 2009. Its parent star is 48 light-years from the Sun, in the constellation Ophiuchus. As of 2017, GJ 1214 b is the most likely known candidate for being an ocean planet. For that reason, scientists have nicknamed the planet “the waterworld”.
HD 85512 b
HD 85512 b is an exoplanet orbiting HD 85512, a K-type main-sequence star approximately 36 light-years from Earth in the constellation of Vela.
Due to its mass of at least 3.6 times the mass of Earth, HD 85512 b is classified as a rocky Earth-size exoplanet (<5M⊕) and is one of the smallest exoplanets discovered to be just outside the inner edge of the habitable zone.
MOA-2007-BLG-192Lb
MOA-2007-BLG-192Lb, occasionally shortened to MOA-192 b, is an extrasolar planet approximately 3,000 light-years away in the constellation of Sagittarius. The planet was discovered orbiting the brown dwarf or low-mass star MOA-2007-BLG-192L. At a mass of approximately 3.3 times Earth, it is one of the lowest-mass extrasolar planets at the time of discovery. It was found when it caused a gravitational microlensing event on May 24, 2007, which was detected as part of the MOA-II microlensing survey at the Mount John University Observatory in New Zealand.
Kepler-22b
Kepler-22b, also known by its Kepler object of interest designation KOI-087.01, is an extrasolar planet orbiting within the habitable zone of the Sun-like star Kepler-22. It is located about 587 light-years (180 pc) from Earth in the constellation of Cygnus. source
More Posts from Acosmicgeek and Others
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert Einstein
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It surprises me how disinterested we are today about things like physics, space, the universe and philosophy of our existence, our purpose, our final destination. Its a crazy world out there. Be curious.
Stephen Hawking
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CMB!!!
Aka the cosmic microwave background, which is a huge piece of evidence for the Big Bang Theory of cosmology, a remnant from the early universe.
Also my favorite superhero is Spiderman.
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I am omnipresent
... why.
There are no aliens - so the only thing we could use this as is like a nuke - but that would destroy the entire Earth xD
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More nebulae!!!
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M27: Not a Comet : While hunting for comets in the skies above 18th century France, astronomer Charles Messier diligently kept a list of the things he encountered that were definitely not comets. This is number 27 on his now famous not-a-comet list. In fact, 21st century astronomers would identify it as a planetary nebula, but it’s not a planet either, even though it may appear round and planet-like in a small telescope. Messier 27 (M27) is an excellent example of a gaseous emission nebula created as a sun-like star runs out of nuclear fuel in its core. The nebula forms as the star’s outer layers are expelled into space, with a visible glow generated by atoms excited by the dying star’s intense but invisible ultraviolet light. Known by the popular name of the Dumbbell Nebula, the beautifully symmetric interstellar gas cloud is over 2.5 light-years across and about 1,200 light-years away in the constellation Vulpecula. This impressive color composite highlights details within the well-studied central region and fainter, seldom imaged features in the nebula’s outer halo. It incorporates broad and narrowband images recorded using filters sensitive to emission from hydrogen and oxygen atoms. via NASA
It’s easy to forget that thousands of comets, asteroids, and meteors are near us everyday. They seem like such a rarity.
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Cosmonaut Ivan Vagner obtained this image of the comet NEOWISE a few hours ago from the International Space Station. He says that the dust tail looks very good from there. It is worth enlarging the image.
via reddit
Looks like I’m getting a new wallpaper
It’s so beautiful ;(
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![Sunset In The Kananaskis Valley, Alberta. [2853 X 3566] [oc] - Author: ProjectOxide On Reddit](https://64.media.tumblr.com/4acdc8c530b36b0a46d6fdcd8512ba15/3f0453439e862857-4a/s500x750/e2c24b329e0a1ff0bdf4a929883229be487175eb.jpg)
Sunset in the Kananaskis Valley, Alberta. [2853 x 3566] [oc] - Author: ProjectOxide on reddit
Best Star Wars movie can’t deny it
Prequels and sequels eat your heart out
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The Empire Strikes Back opened in theaters on this day in 1980.
What a cool illustration :D
It’s true though
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Art by Emanuele Fais
It’s alive ALIVE!!!!!
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Hubble Takes Closer Look at Not-So-‘Dead’ Neighbor : Because they lack stellar nurseries and contain mostly old stars, elliptical galaxies — Like Messier 110 — are often considered “dead” when compared to their spiral relatives. But scientists have spotted signs of a population of young, blue stars at Messier 110’s center, hinting that this neighbor of our Milky Way may not be so “dead” after all. (via NASA)
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