Redshift

Physics Concepts and Laws
Astrophysical Concepts

In physics, redshift is an increase in the wavelength of electromagnetic radiation, corresponding to a decrease in frequency. In astronomy and cosmology, it occurs through relative motion, gravity, or the expansion of the universe. Redshift is commonly represented by z and is used in astronomical surveys to study the universe’s large-scale structure. It can shift radiation across broad ranges of the electromagnetic spectrum and also affects gravitational waves.

Opposite phenomenon: Blueshift
Astronomical forms: Doppler, gravitational, and cosmological redshifts
Common notation: z

Sources and credits

Article: Redshift (English Wikipedia)
Wikidata: Q76250
Text: Card text is adapted from the English Wikipedia article by an automated summary. Wikipedia content is available under CC BY-SA 4.0; see the article history for its contributors. CC BY-SA 4.0 · Article history and contributors
Illustration: By Georg Wiora (Dr. Schorsch) created this image from the original JPG. Derivative work:Kes47 (talk). CC BY-SA 3.0 · File page on Wikimedia Commons
Georg Wiora (Dr. Schorsch) created this image from the original JPG. Derivative work:Kes47 (talk), File:Redshift.png
Modifications: Resized and converted to WebP
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