Astronomy
The Tidal Locking of Exoplanets and Its Effect on Climate
Quick fact
Tidal locking does not automatically create a molten dayside and frozen nightside. Climate simulations of possible Proxima Centauri b atmospheres include temperate cases because winds, clouds and oceans can move heat away from the illuminated hemisphere.
Why this is interesting
A planet can orbit so that one hemisphere continually faces its star. Does that condemn one side to an inferno and the other to permanent ice, or can an atmosphere turn two extremes into a habitable world?