Which of the following is TRUE?
A. We see distant galaxies as they were billions or even tens of billions of years ago.
B. We measure a redshift for roughly half of the galaxies that we observe, and for the others we measure a blueshift.
C. It is possible for galaxies that are very distant to actually move through space at a speed several times the speed of light.
D. A redshift occurs when a photon loses energy and slows down as it moves through space.
E. The center of the universe is located at a point about 200 Mpc from us in the center of a cluster of galaxies.
Ans: A. We see distant galaxies as they were billions or even tens of billions of years ago.
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