Place the Celestial Objects in Order by Size from Planet

question 32

Essay

Place the celestial objects in order by size from planet being the smallest to supercluster being the largest. How do astronomers know our position in the universe?

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Definitions:

Autonomic Stress Response

The body's automatic reaction to stress, involving the sympathetic nervous system and resulting in physiological changes such as increased heart rate and blood pressure.

Posttraumatic Stress Disorder

A psychiatric disorder caused by encountering or observing a horrifying incident, marked by recurring flashbacks, nightmares, and heightened anxiety.

Increased Arousal

A state marked by heightened physiological and psychological activity, often as a response to a stimulus or stress.

Anxiety

Anxiety is a feeling of fear, dread, and uneasiness that may occur as a reaction to stress, often characterized by physical symptoms like increased heart rate.