Why do stars come out in the skyat night?

to the best of my knowledge and simply, each star is a burning ball of fire just like the sun but hundreds of times smaller. when the moon 'comes up', covers the sun it means it isn't as bright because it has to 'light up' the moon and the sky is darker so there fore they are easier to see. when the sun is out in the day, it is very bright and makes the stars unseen. that is a pretty much basic explanation