Classification and interpretation of stellar spectral types based on stellar spectral characteristics. Harvard classification is widely used now, and the spectral types are named in alphabetical order: O, B, A, F, G, K and M. Different spectral types have great differences in the properties of stars. Observing the spectrum of stars can study the composition and structure of stars, the physical process of change, determine the distance of stars and study the movement of stars in space. Classification of spectral types of stars according to their spectral characteristics. Harvard classification is widely used now, and the spectral types are named in alphabetical order: O, B, A, F, G, K and M. Different spectral types have great differences in the properties of stars. Observing the spectrum of stars can study the composition and structure of stars, the physical process of change, determine the distance of stars and study the movement of stars in space.
Word decomposition
Explanation of stars A star itself emits light and heat. In the past, people thought that the positions of these stars were fixed, so they were named stars. In fact, any star is also in motion, just because it is too far away from the earth, so it is not easy to explain in detail the celestial bodies that can emit light and heat. Because it is difficult to detect in a short time.