April, Bobbie-Sue, Jimmy, Mira and Shayne. Stars are huge balls of hot gas. They come in many different shapes, sizes and colors. They are self luminosity which means they make their own light.
Stars form in clusters when clouds of gas and dust come together.
The atoms bump and stick together sending out tremendous amounts of heat and light. As they get smaller, the gas gets hotter and finally this reduction in size slows down and the star begins to shine. Stars are made of mostly hot hydrogen and helium gases. The main gas is hydrogen. Astronomers realized that stars have a life cycle just like human beings.