The formation of a star starts with dense regions of molecular clouds. What force pulls matter together to form these regions? The formation of a star starts with dense regions of molecular clouds pulled together by gravity . Stars are born within the collections of dust and distributed in different galaxies . The star formation takes place million years until a star is born and shines like the Sun. A star is born, lives, and dies are the phases of star life. The excess material from the stars birth is used to form planets, comets, and asteroids. Life Cycle of a Star Below is the life cycle of a star : Giant gas cloud Protostar T-Tauri phase Main sequence Red giant The fusion of heavier elements Supernova Colors of the Star The colors of the star indicate its temperature, composition, and luminosity. Blue is the hottest star , while red is the coolest star . Below are the different color of stars in order: Red Orange Yellow Green White Blue Learn more