When We Say That a Cluster of Galaxies Is Acting

question 33

Multiple Choice

When we say that a cluster of galaxies is acting as a gravitational lens, what do we mean?

• A) It bends or distorts the light coming from galaxies located behind it.
• B) It magnifies the effects of gravity that we see in the cluster.
• C) It is an unusually large cluster that has a lot of gravity.
• D) The overall shape of the cluster is that of a lens.

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Definitions:

Brightest

Having the most light or luminosity; often used metaphorically to describe highly intelligent or clever individuals.

Brightness Contrast

The appearance of a differently illuminated areas in the field of vision, resulting in the perception of varying levels of light intensity.

Lateral Inhibition

A neurological process where the firing rate of a neuron is decreased due to the activity of neighboring neurons, enhancing contrast in sensory perception.

Physiological Process

a biological function or activity in living organisms that is necessary for maintaining life, such as breathing, digestion, or nerve function.