Question 1 of 5The age of a star can beestimated by its color, which o

1.	Question 1 of 5The age of a star can beestimated by its color, which ofthese colors indicates the star isamongst the youngest?RedWhiteYellowBlue
Answer» option 4 is the answer. Throughout most of a star's life, it is burning hydrogen at its core, which creates lots of energy and thus makes it appear blue. As stars age, they run out of hydrogen to burn, decreasing the amount of energy they emit. Thus, younger stars can appear bluer while older ones appear more red, and in this way, a star's color can tell us something about that star's age.

Question 1 of 5The age of a star can beestimated by its color, which ofthese colors indicates the star isamongst the youngest?RedWhiteYellowBlue

Answer»

option 4 is the answer.

Throughout most of a star's life, it is burning hydrogen at its core, which creates lots of energy and thus makes it appear blue. As stars age, they run out of hydrogen to burn, decreasing the amount of energy they emit. Thus, younger stars can appear bluer while older ones appear more red, and in this way, a star's color can tell us something about that star's age.

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Question 1 of 5The age of a star can beestimated by its color, which ofthese colors indicates the star isamongst the youngest?RedWhiteYellowBlue

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