What holds a galaxy together Gravity Or Dark matter
Biology · Middle School · Sun Jan 24 2021
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Galaxies are held together by the force of gravity. Gravity is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another. In a galaxy, gravity acts on both the normal matter, such as stars, gas, and dust, and the mysterious component known as dark matter.