Dark matter is a hypothetical form of matter that does not interact with light or other electromagnetic radiation, making it extremely difficult to detect directly. It is believed to make up a significant portion of the total matter in the universe but is generally not associated with individual planets.
The predominant understanding is that dark matter is distributed on much larger scales, such as within galaxies and galaxy clusters, rather than being concentrated within individual celestial bodies like planets. It is thought to play a crucial role in the formation and evolution of cosmic structures.
Planets, on the other hand, are primarily composed of ordinary matter, which includes atoms and subatomic particles like protons, neutrons, and electrons. The mass and composition of a planet depend on its formation process, which involves the accumulation of material in a protoplanetary disk around a young star. The composition of planets can vary widely, but they are primarily composed of elements like hydrogen, helium, oxygen, carbon, and other heavier elements.
While dark matter is not believed to be a significant component of planets, its influence can indirectly affect the motion of celestial bodies on larger scales, including the dynamics of galaxies and the distribution of matter in the universe as a whole.