Red-Shift (P1.7)

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Our Sun contains helium. We know this because there are black lines in the spectrumof the light from the Sun where helium has absorbed light. These lines form the absorption spectrum for helium.

spectrum of light with black verticle lines  (

Spectrum of the sun

When we look at the spectrum of a distant star, we still see an absorption spectrum. However, the pattern of lines has moved towards the red end of…


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