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A hycean planet is a hypothetical type of planet with liquid water oceans under a hydrogen atmosphere. [1] The presence of extraterrestrial liquid water makes hycean planets regarded as promising candidates for planetary habitability. [2] [3] [4] They are usually considered to be larger and more massive than Earth. [5]
* Water may be present as solid or vapour rather than liquid. [13] Gliese 667 Cc: Gliese 667 C: 3.7 277.4 23 >2 28.1 2011 * Orbits in middle of CHZ, but likely hotter than Earth * Likely terrestrial. * Tidal heating 300 times that of Earth may superheat the planet * Likely tidally locked, liquid water may be limited to terminator, or beyond ...
The sizes are listed in units of Jupiter radii (R J, 71 492 km).This list is designed to include all planets that are larger than 1.6 times the size of Jupiter.Some well-known planets that are smaller than 1.6 R J (17.93 R 🜨 or 114 387.2 km) have been included for the sake of comparison.
A potentially habitable exoplanet that is roughly similar in size to Earth has been found in a system located ... “Gliese 12 b could be at the right temperature for liquid water to pool on ...
51 Pegasi b, officially named Dimidium / d ɪ ˈ m ɪ d i ə m /, is an extrasolar planet approximately 50 light-years (15 parsecs) away in the constellation of Pegasus.It was the first exoplanet to be discovered orbiting a main-sequence star, [3] the Sun-like 51 Pegasi, and marked a breakthrough in astronomical research.
In terms of diameter, WASP-17b is one of the largest exoplanets discovered and at half Jupiter's mass, this made it the most puffy planet known in 2010. [5] On 3 December 2013, scientists working with the Hubble Space Telescope reported detecting water in the exoplanet's atmosphere. [6] [7]
Title Planet Star Data Notes Most massive The most massive planet is difficult to define due to the blurry line between planets and brown dwarfs.If the borderline is defined as the deuterium fusion threshold (roughly 13 M J at solar metallicity [21] [b]), the most massive planets are those with true mass closest to that cutoff; if planets and brown dwarfs are differentiated based on formation ...
Extra-terrestrial water has been found for the first time in a meteorite that has fallen in the UK. The Winchcombe meteorite, which crashed into a driveway in the Gloucestershire town last ...