When a Star or Galaxy Is Moving Away from Us

question 59

Multiple Choice

When a star or galaxy is moving away from us, we observe the Doppler effect by seeing the lines in its spectrum

• A) red-shifted (shifted toward the red end of the light spectrum)
• B) blue-shifted (shifted toward the blue or violet end of the light spectrum)
• C) yellow-shifted (shifted so all the colors become a little bit yellower)
• D) become darker and darker (like a blackbody)
• E) you can't fool me, the Doppler effect only applies to motions on Earth, not to the motions of the stars and galaxies

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Definitions:

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