The Rotation Curve of the Outer Portions of the Galaxy

question 79

Essay

The rotation curve of the outer portions of the Galaxy revealed what about its mass?

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Definitions:

Fever

An elevation in body temperature above the normal range, often a sign of infection or illness.

General Upper Respiratory Symptoms

Non-specific symptoms affecting the upper respiratory tract, including coughing, sneezing, nasal congestion, and sore throat.

Incubation Period

Period between exposure to an infection and when symptoms start to manifest.

Exposure To Infection

The state of coming into contact with infectious agents (bacteria, viruses, fungi), potentially leading to illness.