A:Yes, they do. The observed redshift, or wavelength shift due to motion, of a galaxy’s characteristic light spectrum is a combination of the galaxy’s motion with respect to its neighbors (“peculiar ...
There are several different kinds of redshift that we encounter in the universe. Those three are ‘gravitational’, ‘doppler‘ and ‘cosmological‘. Before looking at two examples, it is best to have a ...
Cosmological redshift depends upon a galaxy's distance. Credit: NASA/JPL-Caltech/R. Hurt (Caltech-IPAC) In 1929 Edwin Hubble published the first solid evidence that the universe is expanding. Drawing ...
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