redshift

noun/ˈrɛdʃɪft/

Frequency rank: #19,298 most common English word

Meaning

The increase in wavelength of light from an object moving away from the observer, shifting it toward the red end of the spectrum.

Illustration for the English word “redshift”

Example sentence

Astronomers confirmed that the galaxy was moving away from Earth by measuring its redshift.

Synonyms & related words

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