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submitted 2 months ago by BB84@mander.xyz to c/science_memes@mander.xyz

cross-posted from: https://lemmy.ml/post/19504984

It's all relative

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[-] BB84@mander.xyz 2 points 2 months ago

While it is true that space time dilation can cause red/blueshift, that is a distinct from the doppler effect which is the primary effect here.

(dilation plays only a small role: without time dilation our answer going from 700nm to 350nm would be 0.5c instead of the 0.6c calculated below)

this post was submitted on 24 Aug 2024
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