red shift
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The red shift that can be observed in light from distant galaxies suggests that the universe is expanding, and thus supports the Big Bang theory.
Example Sentences
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The red shift indicates a change in the electronic structure or optical properties of the material.
From Science Daily • May 3, 2024
Double the distance, and the red shift is doubled.
From Textbooks • Aug. 12, 2015
As galaxies move away from us, their light is shifted to a lower frequency, and so to a longer wavelength—the so-called red shift.
From Textbooks • Aug. 12, 2015
Another known cause of red shift in light is the source being in a high gravitational field.
From Textbooks • Aug. 12, 2015
If the red shift is due to the expansion of the universe, very different red shifts imply very different distances.
From "Cosmos" by Carl Sagan
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.