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Spectroscopic observations with NASA's Hubble Space Telescope provide evidence of high clouds blanketing the planet. Recent searches for planets around other stars (“exoplanets”) have shown that super-Earths like GJ 1214b are among the most common type of planets in the Milky Way galaxy. GJ 1214b was one of the first Super-Earths discovered, and the first exoplanet to have clouds found in its atmosphere. [7] Because of the varying pressure at depth, models of a water world include "steam, liquid, superfluid, high-pressure ices, and plasma phases" of water. [1], In December 2013, NASA reported that clouds may have been detected in the atmosphere of GJ 1214 b. The star is about one-fifth the radius of the Sun with a surface temperature estimated to be 3 000 K (2 730 °C; 4 940 °F). A Framework For Characterizing The Atmospheres Of GJ 1214b-type Low-mass Low-density Transiting Planets 2012 FORTNEY J., NETTELMANN N., KEMPTON E., MORDASINI Ch., ZAHNLE K. & 3 additional authors BAAS, 44, no 5, 103.05 abstract GJ 1214 B, also known as Gliese 1214 B, is an exoplanet that orbits the star GJ 1214. Previous observations of the planet's size and mass demonstrated it has a low density for its size, leading astronomers to conclude the planet is some kind of solid body with an atmosphere. In particular, it is unclear if hydrogen and helium are present or if the atmosphere is water dominated. Up to date there is no consensus about the composition of its envelope although most studies suggest a high molecular weight atmosphere. For instance, if GJ 1214b initially formed beyond the snow line it would contain more icy material than if it formed closer to its star. A paper was then published in Nature announcing the planet and giving estimates of its mass, radius, and orbital parameters. The exoplanet, orbiting a small star only 40 light-years away from us, has a mass about six times that of the Earth. The actual bulk make-up of GJ 1214b is determined by its unknown formation, migration, and evolution history. GJ 1214b is different. GJ 1214 may be a good target to search for a habitable zone planet. The planet, designated GJ 1214b, is only 2.7 times the diameter of Earth — one of the smallest exoplanets found — and orbits just over a million miles from its star (compare to Earth’s 92 million miles) in a zippy 38-hour ‘year.’ Given its size and density, astronomers speculated that GJ 1214b may very well be covered in deep oceans. The planet GJ 1214b, shown here in an artist’s conception with two hypothetical moons, orbits a “red dwarf” star 40 light-years from Earth. According to Harvard-Smithsonian Center for Astrophysics scientist and lead author Zachory Berta, "GJ1214b is like no planet we know of. Follow-up radial-velocity measurements were then made with the HARPS spectrograph on the ESO's 3.6-meter telescope at La Silla, Chile; those measurements succeeded in providing independent evidence for the reality of the planet. The planet orbits a small red dwarf star which has only 16% the mass of our own sun. GJ 1214b is now a hot world with temperatures around 200C (392F). The ground-based MEarth Project, led by CfA's David Charbonneau, discovered GJ 1214b in 2009. it would be more like thick hot ice or alternately acting more like a gas than a liquid. In December 2010, a study was published showing the spectrum to be largely featureless over the wavelength range of 750–1000 nm. For an iron core mass fraction similar to Earth's (30%), GJ 1214b needs 0.3%–1.2% of its mass in a pure H 2 gas layer at the nominal mass and radius. [14], Media related to GJ 1214 b at Wikimedia Commons, Coordinates: 17h 15m 18.94s, +4° 57′ 49.7″, "Open Exoplanet Catalogue – Gliese 1214 b", "Mass–radius relationships for solid exoplanets", "10 Real Planets That Are Stranger Than Science Fiction", "Release 13-383 – NASA's Hubble Sees Cloudy Super-Worlds With Chance for More Clouds", "Astronomers Find Super-Earth Using Amateur, Off-the-Shelf Technology", Astronomers Find World with Thick, Inhospitable Atmosphere and an Icy Heart. [8][9][10][11], GJ 1214 b was first detected by the MEarth Project, which searches for the small drops in brightness that can occur when an orbiting planet briefly passes in front of its parent star. GJ 1214b’s size and mass (2.65 and 6.45 times that of the Earth, respectively;Carter et al.2010) give it a density intermediate to that of our solar system’s inner (rocky) and outer (gas-dominated) planets. 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