- #1
ViolentCorpse
- 190
- 1
Hi!
I have two (stupid) questions:
1) We can determine what elements are present in distant stars by studying their spectrum, right? But if the spectrum of some star is redshifted, wouldn't we be fooled into believing some elements to be present there that might not really be there, due to the shift in the spectrum?
2) How can we tell whether an inherently red object is redshifted?
Many thanks!
I have two (stupid) questions:
1) We can determine what elements are present in distant stars by studying their spectrum, right? But if the spectrum of some star is redshifted, wouldn't we be fooled into believing some elements to be present there that might not really be there, due to the shift in the spectrum?
2) How can we tell whether an inherently red object is redshifted?
Many thanks!