Thank you for the question. There are stars in the sky during both the day and night. You cannot see them during the day because the sky is too bright. Most of the stars move around in the sky during the night and day due to the rotation of Earth.

The sun is the most important star for us. If the other stars didn't exist, it probably wouldn't change our daily lives, unless you study the stars. Certain stars can be useful for navigation on rare occasions, such as the north star.