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25 November, 07:06

What is red shift? What does it indicate?

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  1. 25 November, 07:27
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    The displacement of spectral lines toward longer wavelengths (the red end of the spectrum) in radiation from distant galaxies and celestial objects

    Explanation:

    Red shift' is a key concept for astronomers. The term can be understood literally - the wavelength of the light is stretched, so the light is seen as 'shifted' towards the red part of the spectrum.
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