The spectrum of galaxy A and galaxy B both contain the H-alpha emission line, which is normally seen at 653nm. However, in galax y A the line has an observed wavelength of 710nm, whereas in galaxy B the wavelength is 685nm. Which galaxy is farther away?
1 answer:
Answer: Galaxy A is farther away since it has a wavelength of 710nm as compared to Galaxy B with a wavelength of 685nm nearest to H-alpha emission line with wavelength 653nm.
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