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11-10-2018
Biology

contestada

What features signifies to astronomers that a distant star is part of a planetary system

A) the star periodically dims

B) the star expands into a red giant

C)the star moves through the sky

D) the star continuously gets brighter

Respuesta :

cuquiluz cuquiluz

11-10-2018

I believe the answer is A bit I’m not 100% sure

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