* No atmosphere: The moon has virtually no atmosphere. This means there is no air to scatter sunlight and create the blue sky we see on Earth. Without an atmosphere, the sky on the moon is always black, even during the day.
* No light pollution: There are no cities, cars, or artificial lights on the moon to interfere with the view of the stars. This makes the night sky incredibly clear and bright.
So, astronauts on the moon would have a spectacular view of the stars, even during the lunar day!