Unlike more common smaller stars, such as the red dwarf stars Proxima Centauri and Trappist-1, they are not so faint that planets would be tidally locked, showi

Unlike more common smaller stars, such as the red dwarf stars Proxima Centauri and Trappist-1, they are not so faint that planets would be tidally locked, showing the same side to the star at all times. In such planets, the most habitable zone is around an equator like region where the light and dark regions kind of merge to produce a reddish sunset like hue all through the day. I think one of the planets that Kepler discovered is like that. Life would evolve to absorb these light wavelengths. So for instance plants would all look black. Nova has a great episode on these exoplanets. https://www.youtube.com/watch?v=5HZsFMqqGJo&t=793s https://www.youtube.com/watch?v=5HZsFMqqGJo&t=793s