The Mass of a Single Galaxy Might Be Found by

question 91

Multiple Choice

The mass of a single galaxy might be found by

• A)the double galaxy method.
• B)the rotation curve method.
• C)the cluster method.
• D)any of the methods (i.e., double galaxy, rotation curve, cluster)
• E)none of these methods.

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Definitions:

Circadian Rhythms

Biological processes that display an endogenous, entrainable oscillation of about 24 hours, regulating various physiological processes including the sleep-wake cycle.

REM Sleep

A stage of sleep characterized by rapid eye movements, low muscle tone, and vivid dreams.

Sleep Onset

The transition from wakefulness into sleep.

Minutes

A written record of the proceedings of a meeting.