History, 23.06.2019 22:30 marianasanin2007

Which of the following happens during the main-sequence stage of a star’s life? a)it cycles, appearing brighter and dimmer in turns. b)it changes the color that it emits. c)it increases its distance from the sun. d)it grows continuously smaller and dimmer.

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Which of the following happens during the main-sequence stage of a star’s life? a)it cycles, appea...