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 scienti...
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