What severe challenge does a tidally locked world orbiting a dimmer star present for heat distribution?

Answer

It requires an extremely efficient atmosphere to move heat from the sun-facing side to the side in eternal night.

A tidally locked world, often found orbiting dimmer stars like M-dwarfs, requires an atmosphere capable of very efficient heat distribution to prevent the permanently dark side from freezing solid.

What severe challenge does a tidally locked world orbiting a dimmer star present for heat distribution?

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Planet Earth - What Makes It Habitable? - YouTube

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