Red shift and blue shift can be used to describe/explain planets moving away/toward us. Are there 'yellow', 'orange', violet' shifts as well? Do we always observe the shift to the red/blue parts
![Have astronomers ever observed a violet shift like they have blue shifts and red shifts? | Science Questions with Surprising Answers Have astronomers ever observed a violet shift like they have blue shifts and red shifts? | Science Questions with Surprising Answers](https://wtamu.edu/~cbaird/sq/images/redshift.png)
Have astronomers ever observed a violet shift like they have blue shifts and red shifts? | Science Questions with Surprising Answers
![Red/blue shifting hydrogen bonds in acetonitrile-dimethyl sulphoxide solutions: FTIR and theoretical studies - ScienceDirect Red/blue shifting hydrogen bonds in acetonitrile-dimethyl sulphoxide solutions: FTIR and theoretical studies - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S0022286017302971-fx1.jpg)
Red/blue shifting hydrogen bonds in acetonitrile-dimethyl sulphoxide solutions: FTIR and theoretical studies - ScienceDirect
![When looking at a spectrum of light from a star, how can we tell that the light has undergone red shift (or blue shift)? | Socratic When looking at a spectrum of light from a star, how can we tell that the light has undergone red shift (or blue shift)? | Socratic](https://useruploads.socratic.org/hrvKBpgxQSzv454vCPmQ_dopplercomp1.jpg)