chrisvt1019 chrisvt1019

08-05-2024
Physics

Answered

7. The redshift of a galaxy is:
A. The rate at which a galaxy is expanding in size
B. How much redder the galaxy appears when observed at large distances
C. The speed at which a galaxy is orbiting around
the Milky Way
D. The relative speed of the redder stars in the galaxy with respect to the bluer star
E. The recessional velocity of a galaxy, expressed as a fraction
of the speed of light

Answer :

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