The importance of dark matter in the Milky Way's dynamics from "summary" of The Milky Way by Moiya McTier
Dark matter plays a crucial role in the dynamics of our Milky Way galaxy. Though invisible and mysterious, dark matter's influence can be observed through its gravitational effects on visible matter. The presence of dark matter affects the motion of stars, gas, and other celestial objects within the Milky Way. Without dark matter, the Milky Way would not have its current structure and behavior. Dark matter acts as a gravitational glue that holds the galaxy together, preventing stars from flying off into space. It provides the additional mass needed to explain the high velocities of stars in the outer regions of the galaxy. One way scientists study dark matter in the Milky Way is by observing the motion of stars and gas in the galaxy. By measuring these velocities, researchers can infer the distribution of dark matter throughout the Milky Way. These observations have led to the conclusion that dark matter makes up the majority of the Milky Way's mass. Understanding the role of dark matter in the Milky Way's dynamics is crucial for our overall comprehension of the galaxy and the universe as a whole. By studying dark matter, scientists can gain insights into the formation and evolution of galaxies, as well as the nature of the universe's most abundant but enigmatic component.- Dark matter is not just a mere theoretical concept but a fundamental aspect of the Milky Way's dynamics. Its presence shapes the galaxy's structure and behavior, influencing the motion of stars and gas within it. By unraveling the mysteries of dark matter, we can deepen our understanding of the cosmos and our place within it.
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