Asked by I need Help (Guidance)
The calcium II K line has a rest wavelength of l0 = 393.36 nm. You observed this line in the spectrum of a galaxy, and found that the observed wavelength of this line is l = 421.76 nm. What is the distance to this galaxy? You may use Hubble constant H0 = 70 km s−1 Mpc−1.
Answers
Answered by
bob
probably further than 10m
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