Definition of "blueshift" []

• A change in the wavelength of light, in which the wavelength is shorter than when it was emitted at the source. (noun)

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• ""blueshift", methods for determining whether a star is moving away from or towards you respectively."
• "The spectrograph allowed the researchers to monitor the redshift or blueshift of light as the planet orbited the star."
• "First with the dipole motion, the redshift/blueshift pattern caused by our motion."