Planets: Difference between revisions
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|''Ice world composed mainly of water ice. Worlds like this will not have had much heating in the past, forming in the cooler regions of a star system and have retained many volatiles as solids in their crust.'' | |''Ice world composed mainly of water ice. Worlds like this will not have had much heating in the past, forming in the cooler regions of a star system and have retained many volatiles as solids in their crust.'' | ||
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|[[File:Rocky bodies HIP 99152 2 b a+b.png|thumb|center]] | |[[File:Rocky body HIP 53248 AB 4 d.png|thumb|center]][[File:Rocky bodies HIP 99152 2 b a+b.png|thumb|center]] | ||
|Rocky body | |Rocky body | ||
|Very Common | |Very Common | ||
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!Description | !Description | ||
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|[[File:Class I gas giant Wredguia HY-G c24-12 1.png|thumb|center]] | |[[File:Class I gas giant Wredguia HY-G c24-12 1.png|thumb|center]][[File:Class I gas giant HIP 53248 AB 4.png|thumb|center]] | ||
|Class I gas giant | |Class I gas giant | ||
|Common | |Common | ||
|''Class I or Jovian gas giants have primarily hydrogen and helium atmospheres. Colouration comes from clouds in the upper atmosphere of ammonia, water vapour, hydrogen sulphide, phosphine and sulphur. The temperature at the top of their upper cloud layers is typically less than 150 K.'' | |''Class I or Jovian gas giants have primarily hydrogen and helium atmospheres. Colouration comes from clouds in the upper atmosphere of ammonia, water vapour, hydrogen sulphide, phosphine and sulphur. The temperature at the top of their upper cloud layers is typically less than 150 K.'' | ||
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|[[File:Class II.png|thumb|center]] | |[[File:Class II gas giant HIP 53248 AB 1.png|thumb|center]] | ||
|Class II gas giant | |Class II gas giant | ||
|Rare | |Rare | ||