1. a shift of electromagnetic radiation toward shorter wavelengths, typically observed when the source is moving toward the observer
Usage: physics; astronomy

1. to undergo or cause a shift toward shorter wavelengths
Usage: physics; astronomy

Examples

• The approaching star showed a noticeable blueshift in its spectrum.
• Astronomers detected a blueshift in the galaxy’s light, indicating it was moving toward Earth.
• The Doppler effect can cause light to blueshift when the source approaches the observer.
• Scientists measured how much the radiation would blueshift as the object accelerated toward them.
• The blueshift of the spectral lines confirmed the star’s motion in our direction.
• High-energy photons can blueshift when falling into a gravitational well.