+An **accretion disk** is a luminous, rotating structure formed by gas and dust spiraling inward toward a massive central object, often a [Black Hole](/wiki/black_hole) or a [Young Star](/wiki/young_star). As matter orbits closer, friction heats it intensely, emitting vast amounts of radiation across the electromagnetic spectrum.
+## See also
+- [Gravitation](/wiki/gravitation)
+- [Active Galaxy](/wiki/active_galaxy)
+- [Binary System](/wiki/binary_system)
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