Planets: Difference between revisions
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|''Class IV gas giants have primarily hydrogen and helium atmospheres with carbon monoxide and upper clouds of alkali metals above lower cloud layers of silicates and iron compounds, hence the brighter colours. The temperature of their upper cloud layers is typically above 900 K.'' | |''Class IV gas giants have primarily hydrogen and helium atmospheres with carbon monoxide and upper clouds of alkali metals above lower cloud layers of silicates and iron compounds, hence the brighter colours. The temperature of their upper cloud layers is typically above 900 K.'' | ||
|Rare | |Rare | ||
(Common in systems with stars of class A or higher) | <small>(Common in systems with stars of class A or higher)</small> | ||
|[[File:Gas-Giant-Class-IV-180px.png|thumb|center]] | |[[File:Gas-Giant-Class-IV-180px.png|thumb|center]] | ||
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|''Class V gas giants have primarily hydrogen and helium atmospheres, with thick clouds of silicates and iron compounds, even metallic iron.They are the hottest type of gas giants with temperatures at their upper cloud decks above 1400 K, and much hotter in the lower layers, often emitting a dull glow from the internal heat within.'' | |''Class V gas giants have primarily hydrogen and helium atmospheres, with thick clouds of silicates and iron compounds, even metallic iron.They are the hottest type of gas giants with temperatures at their upper cloud decks above 1400 K, and much hotter in the lower layers, often emitting a dull glow from the internal heat within.'' | ||
|Rare | |Rare | ||
(Common in systems with stars of class A or higher) | <small>(Common in systems with stars of class A or higher)</small> | ||
|[[File:Gas Giant Class V.png|thumb|center]] | |[[File:Gas Giant Class V.png|thumb|center]] | ||
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