Redshift Calculator
From Observed and Emitted Wavelength
z = (obs - emit) / emit
From Redshift Value
Formula
z = (obs - emit) / emit | v = cz | d = v / H0
Frequently Asked Questions
What is redshift?
Redshift is the increase in wavelength of light from a receding object. It indicates how fast an object moves away.
What is Hubble constant?
The Hubble constant H0 is about 70 km/s/Mpc, relating recession velocity to distance.
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