The Sun Side Is Always Faced With the Sun, Right?

The theory here is it's like our moon, right? So explain for the listeners. The sun side of this planet is always facing the sun, wel not the sun, but the star in the same orientation. And the back side is always dark, so that the area where the light and the dark side meet,. Where it's kind of shadowy around the edge, they're like somewhere. There is just the perfect temperature for humanity.