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A gas giant is a giant planet composed mainly of hydrogen and helium. [1] Jupiter and Saturn are the gas giants of the Solar System . The term "gas giant" was originally synonymous with " giant planet ".
Sudarsky's classification of gas giants for the purpose of predicting their appearance based on their temperature was outlined by David Sudarsky and colleagues in the paper Albedo and Reflection Spectra of Extrasolar Giant Planets [1] and expanded on in Theoretical Spectra and Atmospheres of Extrasolar Giant Planets, [2] published before any successful direct or indirect observation of an ...
A giant planet, sometimes referred to as a jovian planet (Jove being another name for the Roman god Jupiter), is a diverse type of planet much larger than Earth. Giant planets are usually primarily composed of low- boiling point materials ( volatiles ), rather than rock or other solid matter, but massive solid planets can also exist.
Astronomers have identified a planet that’s bigger than Jupiter yet surprisingly as fluffy and light as cotton candy. The gas giants in our solar system — Jupiter, Saturn, Uranus and Neptune ...
It orbits a Jupiter-like gas giant exoplanet in the habitable zone, mostly white due to water vapor clouds (Class II, in Sudarsky's exoplanet classification) If the moon's mass is not too low compared to the planet, it may in turn stabilize the planet's axial tilt, i.e. its obliquity against the
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.
[55] [56] [57] Sodium and water vapour has also been observed in the atmosphere of HD 189733 b, [58] [59] another hot gas giant planet. In October 2013, the detection of clouds in the atmosphere of Kepler-7b was announced, [ 60 ] [ 61 ] and, in December 2013, also in the atmospheres of Gliese 436 b and Gliese 1214 b .
Proposed missions to gas giants are typically based on engineering and scientific assessments of technological capabilities at the time of study. These proposals are usually associated with high-budget space agencies like NASA. Mission profiles may include strategies such as flybys, landers, or other types of system encounters aimed at ...