Question text
40 What is the definition of redshift? A the increase in observed frequency of light from galaxies that are moving away from the Earth B the increase in observed wavelength of light from galaxies that are moving away from the Earth C the light emitted by distant galaxies that is blue when it reaches the Earth D the light reaching the Earth that is red when it is emitted by distant galaxies
40 What is the definition of redshift?
A the increase in observed frequency of light from galaxies that are moving away from the
Earth
B the increase in observed wavelength of light from galaxies that are moving away from the
Earth
C the light emitted by distant galaxies that is blue when it reaches the Earth
D the light reaching the Earth that is red when it is emitted by distant galaxies
Select your answer: