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zalisa [80]
3 years ago
10

A star’s light is alternately shifted from the blue part of the light spectrum to the red part.

Physics
1 answer:
g100num [7]3 years ago
4 0
The answer is A because it is an example of red shift which if basically the Doppler effect , but for light. The wavelength gets longer because it has visible light has shifted into the red end of the spectrum, showing that it has a shorter frequency with a longer wavelength; meaning it is moving away from us
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