We Can Determine the Amount of Mass in a Cluster

question 191

Multiple Choice

We can determine the amount of mass in a cluster of galaxies by observing its gravitational interactions.How much of this mass is luminous matter?

• A) 1-2%
• B) 10-20%
• C) 50%
• D) 80-90%

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Definitions:

Epidermis

The outermost layer of the skin that acts as a barrier against environmental damage and pathogens.

Dermis

The thick layer of living tissue below the epidermis that forms the true skin, containing sweat glands, hair follicles, and connective tissue.

Stratum Basale

The deepest layer of the epidermis, consisting of basal cells that continuously divide and produce new skin cells.

Melanocytes

Cells located in the bottom layer of the skin's epidermis that produce melanin, the pigment responsible for skin color.