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A star has a spectrum shift exhibiting a red shift. What can you conclude about the distance from earth to that star

Sagot :

Its going away cuz red shift goes away (somehow i think of hell so think that u wanna go away from it)
AL2006
Red shift in the spectrum of a star is always taken to mean that the source of the light is moving away from us.

That's the whole basis for the notion of the expanding universe, since we don't know of any other mechanism that can shift light toward longer wavelengths.