.
.
(a gas giant is a ‘giant planet’ composed mainly of ‘hydrogen’ + ‘helium’)
.
(the term “gas giant” was originally synonymous with “giant planet”, but in the ‘1990s’ it became known that ‘uranus’ + ‘neptune’ are really a ‘distinct class’ of ‘giant planet’, being composed mainly of ‘heavier volatile substances’ (which are referred to as ‘ices’))
(for this reason, ‘uranus’ + ‘neptune’ are now often classified in the separate category of “ice giants”)
(‘jupiter’ + ‘saturn’ consist mostly of ‘hydrogen’ + ‘helium’, with ‘heavier elements’ making up 3% – 13% of its ‘mass’)
(they are thought to consist of an ‘outer layer’ of ‘molecular hydrogen’ surrounding a layer of ‘liquid metallic hydrogen’, with probably a ‘molten rocky core’)
(the ‘outermost portion’ of their ‘hydrogen atmosphere’ is characterized by many ‘layers’ of ‘visible clouds’ that are mostly composed of ‘water’ + ‘ammonia’)
the layer of metallic hydrogen makes up the bulk of each planet, and is referred to as “metallic” because the very large pressure turns hydrogen into an electrical conductor.
the gas giants’ cores are thought to consist of heavier elements at such high temperatures (20,000 K) and pressures that their properties are poorly understood.
(the defining differences between a very low-mass brown dwarf and a gas giant (~13 MJ) are debated)
(one school of thought is based on formation; the other, on the physics of the interior)
.
(part of the debate concerns whether “brown dwarfs” must, by definition, have experienced nuclear fusion at some point in their history)
.
.
.
.
.
.
💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
.
.
*🌈✨ *TABLE OF CONTENTS* ✨🌷*
.
.
🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥