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the following answer originates from my knowledge or is an edit of an other users knowledge. i have underlined words were not hyperlinks and have been done so for the public's better understanding.

In our solar system Mercury is the smallest of the eight planets, and is the only one not to have an atmosphere. This may be due to:-

  • its small size ( Dwarf planets tend to be too small or they have a weak gravitational pull which cannot capture gasses to form an atmosphere. although dwarf planet Pluto is thought to have a very thin atmosphere.
  • its close proximity to the sun. there is a popular belief that solar storms or sun eruptions could have wiped off the atmosphere of Mercury or maby mercury had a very thin atmosphere which was drawntowards the sun due to its immense gravity
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Q: What planets have no atmosphere at all?
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What does the atmosphere of the jovian planets consist of?

they all have different gasses in there atmosphere


What is the atmosphere of all of the planets made of?

air and gasses and for some no atmosphere


All gas planets have what around them?

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A planet's atmosphere doesn't have strength.


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Yes, all planets have atmosphere but to my knowledge mars' is not breathable.


Do all planets have clouds?

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atmosphere is made up of gases in all planets. But if you mean planets that are mostly atmosphere, then those are gas giants (Jupiter, Saturn, Neptune, Uranus)


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The thinnest atmosphere belongs to planet Mercury . . . it may have no atmosphere, at all.


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Why do all of the gas planets have thick atmosphere's?

because its cold


Why doesn't the atmosphere of the giant planets escape into space?

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Do all planets have wind?

In this solar system, yes. However, other planets in other systems may have had their atmosphere stripped away; thus they have no internal wind.