Planets: Difference between revisions

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There are three main categories of ~~[[:Category:Planets|~~planets]]: [[Terrestrial Planet|Terrestrial planets]], [[Water World]]s and [[Gas Giant]]s.

There are three main categories of '''planets''': [[Terrestrial Planet|Terrestrial planets]], [[Water World]]s. and [[Gas Giant]]s.

The term planet refers to celestial bodies orbiting a [[star]] with a [[gravity]] in a specific range. The gravity of a planet has to be strong enough to hold fluids in a stable state (hydrostatic equilibrium) which prevents them from escaping the planet and low enough to prevent nuclear processes to start as in stars.

The term planet refers to celestial bodies orbiting a [[star]] with a [[gravity]] in a specific range. The gravity of a planet has to be strong enough to hold fluids in a stable state (hydrostatic equilibrium) which prevents them from escaping the planet, and low enough to prevent nuclear processes to start as in stars.

Some astronomical ~~bodies, we call planets,~~ are ~~not considered~~ as ~~planets by this definition~~. [[~~Moons~~]] ~~are natural satellites orbiting a~~ planet ~~and do not fall into~~ the ~~category~~ of ~~planets. However~~, ~~some natural satellites are~~ considered as planets ~~because they fit their definition~~.<ref>https://www.universetoday.com/85749/is-the-moon-a-planet/</ref>

Some astronomical objects that meet the official criteria for planet status yet also happen to orbit a planet are instead classified as natural satellites or [[moons]]. When a moon's orbit expands to the point that the [[barycentre]] of the planet-moon system falls outside the center of the planet, then both bodies would be considered planets and part of a double-planet system.<ref>https://www.universetoday.com/85749/is-the-moon-a-planet/</ref>

== [[Terrestrial Planet|Terrestrial Planets]] ==

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Gas-Giant-Class-III-180px.png

20170221073152_1.jpg

~~PS Communities_20200111_115125.jpg|Type III Green Gas Giant~~

Screenshot_20200111-115555.jpg|Type III Green Gas Giant

</gallery>

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-There are three main categories of [[:Category:Planets|planets]]: [[Terrestrial Planet|Terrestrial planets]], [[Water World]]s and [[Gas Giant]]s.
+There are three main categories of '''planets''': [[Terrestrial Planet|Terrestrial planets]], [[Water World]]s. and [[Gas Giant]]s.
-The term planet refers to celestial bodies orbiting a [[star]] with a [[gravity]] in a specific range. The gravity of a planet has to be strong enough to hold fluids in a stable state (hydrostatic equilibrium) which prevents them from escaping the planet and low enough to prevent nuclear processes to start as in stars.
+The term planet refers to celestial bodies orbiting a [[star]] with a [[gravity]] in a specific range. The gravity of a planet has to be strong enough to hold fluids in a stable state (hydrostatic equilibrium) which prevents them from escaping the planet, and low enough to prevent nuclear processes to start as in stars.
-Some astronomical bodies, we call planets, are not considered as planets by this definition. [[Moons]] are natural satellites orbiting a planet and do not fall into the category of planets. However, some natural satellites are considered as planets because they fit their definition.<ref>https://www.universetoday.com/85749/is-the-moon-a-planet/</ref>
+Some astronomical objects that meet the official criteria for planet status yet also happen to orbit a planet are instead classified as natural satellites or [[moons]]. When a moon's orbit expands to the point that the [[barycentre]] of the planet-moon system falls outside the center of the planet, then both bodies would be considered planets and part of a double-planet system.<ref>https://www.universetoday.com/85749/is-the-moon-a-planet/</ref>
 == [[Terrestrial Planet|Terrestrial Planets]] ==
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 Gas-Giant-Class-III-180px.png
 20170221073152_1.jpg
-PS Communities_20200111_115125.jpg|Type III Green Gas Giant
 Screenshot_20200111-115555.jpg|Type III Green Gas Giant
 </gallery>

Planets: Difference between revisions

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