Question

The path across the H-R diagram taken by a star-to-be toward the main sequence, is called its_________________

Answer 1

Answer)

The path across the H-R diagram taken by a star-to-be toward the main sequence, is called its evolutionary track.

Before this evolutionary track, a main sequence star consumes the hydrogen present at its core which leads to loss of energy generation and finally resumption of gravitational collapse takes place.

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