Question

The sun and stars give off radiant energy.



Observation of a star's radiant energy enables us to study the star’s composition and which factor?



A.


the number of stars in its galaxy


B.


the distance to the center of its galaxy


C.


whether it is moving toward us or away from us


D.


the number of planets in its solar system

Answer 1

C.whether it is moving toward us or away from us

Answer 2

Answer:

C. Weather it is Moving Towards Us or Away From Us

Explanation:

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