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The diagram below shows most of the major types of stars (the majority of stars are main sequence stars). Stars just like our own Sun that burn hydrogen into helium to produce energy. This diagram shows the typical properties for each type of star.
A quick guide to main sequence stars - BBC Sky at Night Magazine
Different types of stars ( listed below) have different spectral characteristics and, even though they only differ in brightness to the unaided eye, stars are divided into seven basic spectral classes and eight luminosity classes.
28 Οκτ 2017 · Star Classification Chart. The Hertzsprung-Russell diagram (HR diagram) shows a group of stars at different stages of their evolution. Astronomers can tell a star’s internal structure and evolutionary stage simply by locating its position on the star classification chart.
Main sequence stars are assigned seven main spectral types, which are determined based on temperature: O, B, A, F, G, K, and M. O-type stars are the hottest and most massive, while M-class stars – red dwarfs – are the coolest, least massive, and most numerous.
9 Φεβ 2024 · This reveals some distinctive patterns. 90% of all stars are in the "main sequence," from bright, blue stars at the upper left, to dim, red stars at the lower right. Our yellow Sun is in the middle of this sequence.
Main-sequence stars are fusing hydrogen into helium. These nuclear fusion take place deep in the cores of stars. Stars spend about 90% of their lives in this stage. Our Sun is about 5,000 million years into its 10,000 million-year main-sequence. One of the fundamental forces in the Universe is gravity. It is the force that holds us on Earth.
