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A star moving away from us has its spectral lines shifted towards the:
ADark end
BBright end
CRed end
DBlue end
Answer & Solution
Correct answer: C. Red end
1. Motion away stretches the waves.
2. Stretched visible waves look redder.
3. So the lines shift to the red end.
_Source: OpenStax Astronomy 2e, Chapter 5, Radiation and Spectra._
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