Why Does the Rotation of Our Galaxy Suggest That It

question 16

Essay

Why does the rotation of our galaxy suggest that it is more massive than previously thought

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Definitions:

Human Immunodeficiency Virus

A virus that attacks the immune system and can lead to acquired immunodeficiency syndrome (AIDS), a condition in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive.

Malignant Tumours

Cancerous growths that have the ability to invade nearby tissues and spread to other parts of the body.

Blood

A vital liquid in humans and animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away.

Volatility

A statistical measure of the dispersion of returns for a given security or market index, often used to quantify the risk of the security or market.