Cosmological Redshift refers to
A) the expansion of space itself.
B) the expansion of galaxies.
C) the expansion of red giants.
D) the tendency of light to expand when free of gravitational influences.
Question 2
The redshift of a galaxy refers to the rate
A) at which is receding.
B) at which it is approaching.
C) at which it is spinning.
D) of its fusion.
