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a star appears to be red in the night sky. is the star traveling toward the earth or away from the earth? how do we know this?

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(pls ! )a star appears to be red in the night sky. is the star traveling toward the earth or away from the earth? how do we know this?

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a star appears to be red in the night sky. is the star traveling toward the earth or away from the earth? how do we know this?