Definition of blueshift
: the displacement of the spectrum of an approaching celestial body toward shorter wavelengths
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Recent Examples of blueshift from the Web
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Astronomers first studied faraway star surfaces by looking at the redshift or blueshift of light coming from the stars, a technique called Doppler imaging that reveals movement on the stars' surfaces.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blueshift.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of blueshift
1933
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