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Compared to a stationary galaxy, light from a galaxy that is moving toward Earth will appear _____. a. bluer b. redder c. the same
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Compared to a stationary galaxy, light from a galaxy that is moving toward Earth will appear _____.

a. bluer
b. redder
c. the same

User Carroll
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1 Answer

4 votes
a. Bluer

As per Doppler effect, when the source of light is moving toward the receptor of the light the waves experience "compresssion" increasing the frequency of the way and the color turns bluer, this is known as blueshift.
User Giulio Muscarello
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