The explanation about the similarity in the paths that a star follows along H-R diagram as it forms from a protostar and as it leaves the main sequence to climb the red giant branch.

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Chapter 16, Problem 23QP

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The explanation about the similarity in the paths that a star follows along H-R diagram as it forms from a protostar and as it leaves the main sequence to climb the red giant branch.

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In the H-R diagram we see that stellar masses__________ downward along the main sequence. At the upper end of the main sequence, the hot, luminous O stars can have masses as high as _________ or more times that of the Sun. On the lower end, cool, dim M stars may have as little as __________ times the mass of the Sun. Many more stars fall on the lower end of the main sequence than on the upper end, which tells us that _________stars are much more common than __________ stars.

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