-The stars are a large body of hot gas. we see it so small, because the stars at long way away. The star bore giant clouds of dust and gas. The stars can shrink, because it has gravity, made everything into meddle of nuclear reactions.
-The stars have many different type, had color, temperature and luminosity. have 5 different color, Blue, White, Yellow, Orange and Red. The temperature has high and low. The luminosity has dim and bright. And other type is Supergiant, Giants, White Dwarfs and Main Sequence Stars.
-A graphical tool that astronomers use to classify stars according to their luminosity, spectral type, color, temperature and evolutionary stage.
-The nuclear reactions inside a star change two hydrogen gas molecules into a helium molecule. This process is known as nuclear fusion. This is how a star makes energy.
5. The life cycle of a star?
-The stars made in giant clouds of dust and gas. All stars come from a stellar nebula. As sun-like: sun-like stars, red giant, planetary nebula, white dwarf then black dwark.
