classification of stars

Stars are classified based on their brightness, temperature, and spectral characteristics, primarily using what’s called spectral types (O, B, A, F, G, K, M). This classification arranges stars from hottest and brightest (O-type) to coolest and dimmest (M-type). Each type has specific features in the light spectra they emit. For example, the Sun is a G-type star. This system helps astronomers understand a star's size, age, and evolution. Overall, star classification provides a way to organize and study the diverse stars in our universe based on observable properties.