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What is a redshift? (question #3 on the paper, not sure if the graph on there will help)

What is a redshift? (question #3 on the paper, not sure if the graph on there will help)
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What is a redshift? (question #3 on the paper, not sure if the graph on there will help)

What is a redshift? (question #3 on the paper, not sure if the graph on there will-example-1
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User Anurag Bhalekar
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A redshift is the displacement of spectral lines toward longer wavelength in radiation from distant galaxies and celestial objects. This is interpreted as a doppler shift that is proportional to the velocity of recession and thus to distance.
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User JDiMatteo
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When light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum
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User Darpan Kulkarni
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