If you found a galaxy with an Hα emission line that had a wavelength of 756.3 nm,what would be the galaxy's redshift? Note that the rest wavelength of the Hα emission line is 656.3 nm.
A)0.05
B)0.07
C)0.10
D)0.13
E)0.15

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The Answer of If you found a galaxy with an Hα emission line that had a wavelength of 756.3 nm,what would be the galaxy's redshift? Note that the rest wavelength of the Hα emission line is 656.3 nm.
A)0.05
B)0.07
C)0.10
D)0.13
E)0.15

If You Found a Galaxy with an Hα Emission Line