red-shift

柯林斯词典

redshift /ˈredˌʃɪft/

• 1. N a shift in the lines of the spectrum of an astronomical object towards a longer wavelength (the red end of an optical spectrum), relative to the wavelength of these lines in the terrestrial spectrum, usually as a result of the Doppler effect caused by the recession of the object 红移 (Compare blueshift)

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