Gravity plays a key role in shaping galaxies from "summary" of The Milky Way by Moiya McTier
Gravity is the force that holds galaxies together. Without gravity, galaxies would not exist in their present form. This force is what keeps stars bound to each other, preventing them from flying off into space. Gravity is like the glue that holds everything in a galaxy in place. As galaxies form, gravity plays a crucial role in determining their shape and structure. It pulls matter together, causing it to clump and form the familiar spiral arms or elliptical shapes that we see in galaxies. Without gravity, galaxies would not have the distinct shapes that we observe. In addition to shaping the o...
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