One side of the planet is always facing its star. And I presume the gas swirling is on a much shorter/slower scale than the planet's rotation, so the notion of

One side of the planet is always facing its star. And I presume the gas swirling is on a much shorter/slower scale than the planet's rotation, so the notion of a side is meaningful. https://www.google.com/search?q=tidally+locked&ie=utf-8&oe=utf-8 https://www.google.com/search?q=tidally+locked&ie=utf-8&oe=u...