Angular momentum is a physical quantity that represents the rotational motion of an object, calculated as the product of its moment of inertia and angular velocity. In the context of astrophysics, angular momentum plays a crucial role in the formation and evolution of structures like accretion disks, where matter spirals inwards towards a central object while conserving angular momentum. This conservation leads to the flattening of the disk and influences the dynamics of the material within it.
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