WRONG! There is a day-night cycle, it just lasts a year. One side of the moon always faces the earth, which means that it faces the sun half the year as the earth revolves around the sun.
I thought that a few small regions near the lunar poles are in permanent darkness because its axis is barely tilted, so sunlight never reaches the deepest parts of certain polar craters.
nps, it’s fourteen days of darkness between lunar sunset and lunar sunrise. But that’s not the issue: there are patches of the surface of the moon at the poles that ***never*** see the sun due to high crater poles.