At the Center of the Milky Way Galaxy, a Supermassive

question 38

Essay

At the center of the Milky Way galaxy, a supermassive black hole is thought to exist. Similar supermassive black holes are thought to exist at the center of spiral galaxies throughout the universe. The stars that originally formed these black holes must have been extraordinarily large. Why would stars potentially have been much larger earlier in the history of the universe?

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Definitions:

Opponent Process Model

A psychological and neurological model that explains a wide range of behaviors, including color vision and emotions, by proposing that elements in the visual system or emotional reactions operate in opposing pairs.

Cocaine

A powerful stimulant drug derived from the leaves of the coca plant, which is illegal in many countries due to its highly addictive properties and health risks.

Addicted

The state of being compulsively committed or habituated to a substance, thing, or activity, leading to physiological or psychological dependence.

Alcoholic

An individual who has a dependence on or addiction to alcohol, often characterized by an uncontrollable urge to drink.