Blue Shift
The increase in the frequency of starlight because of the Doppler shift. If a yellow star is moving toward you, it's light will appear slightly bluish. In outer space, blue shifted galaxies are rare. Blue shift can also be created by shrinking the space between two points via gravity or space warps.
The Urban Dictionary Mug
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We really like our cup!!!
Just as described. Excellent packaging. Timely shipping. No problems here. Thanks!
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