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There are likely to be such planets. Almost certainly they exist. We know of none.
Do you know that the size of a gaseous planet is limited? Too small and all the gas is lost to space too large and the planet becomes a star.
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This tells you that the bigger a planet is, the hotter it is, everything else being equal. For a wind to exist, the temperature of the surface (or in the atmosphere) must be hot enough to allow gas to exist.
Since space is cold and the surface of a planet is (relatively) hot (at least, until it has cooled off) convection currents will create wind.
So there will be some cold frozen planets without atmosphere (so without wind) and there will be some giant planets with wind. Are there any planets that have an atmosphere but have no wind? I don't know. I doubt it.
Just think how hot the core of the Earth still is, 4.5 billion years after it was formed. And Earth is a small planet. Since the Universe is only 13.7 billion years old, I *guess* that the big planets formed 13 billion years ago are still hot enough to have hydrogen winds.
There are likely to be such planets. Almost certainly they exist. We know of none.
Do you know that the size of a gaseous planet is limited? Too small and all the gas is lost to space too large and the planet becomes a star.
...
This tells you that the bigger a planet is, the hotter it is, everything else being equal. For a wind to exist, the temperature of the surface (or in the atmosphere) must be hot enough to allow gas to exist.
Since space is cold and the surface of a planet is (relatively) hot (at least, until it has cooled off) convection currents will create wind.
So there will be some cold frozen planets without atmosphere (so without wind) and there will be some giant planets with wind. Are there any planets that have an atmosphere but have no wind? I don't know. I doubt it.
Just think how hot the core of the Earth still is, 4.5 billion years after it was formed. And Earth is a small planet. Since the Universe is only 13.7 billion years old, I *guess* that the big planets formed 13 billion years ago are still hot enough to have hydrogen winds.