When we say that a cluster of galaxies is acting as a gravitational lens, what do we mean?
A. It magnifies the effects of gravity that we see in the cluster.
B. It is an unusually large cluster that has a lot of gravity.
C. It bends or distorts the light coming from galaxies located behind it.
D. The overall shape of the cluster is that of a lens.
Answer:C
When we say that a cluster of galaxies is acting as a gravitational lens, what do we mean?
A. It magnifies the effects of gravity that we see in the cluster. B. It is an unusually large cluster that has a lot of gravity. C. It bends or distorts the light coming from galaxies located behind it. D. The overall shape of the cluster is that of a lens.