Red Shift (Noun)
Meaning
(astronomy) a shift in the spectra of very distant galaxies toward longer wavelengths (toward the red end of the spectrum); generally interpreted as evidence that the universe is expanding.
Classification
Nouns denoting natural phenomena.
Examples
- This phenomenon is known as red_shift, and it is a key piece of evidence for the expansion of the universe.
- The farther away a galaxy is from us, the more pronounced the red_shift of its light.
- Astronomers use red_shift to calculate the distance and velocity of galaxies.
- The observation of red_shift in the spectra of galaxies led to the realization that the universe is expanding.
- According to Hubble's law, the velocity of a galaxy is directly proportional to its red_shift.