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Related to cosmic dust: Interstellar dust
Clouds of fine particles of matter in interstellar and interplanetary space.
(Astronomy) fine particles of solid matter occurring throughout interstellar space and often collecting into clouds of extremely low density. See also nebula1
fine particles of matter in space.
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|Noun||1.||cosmic dust - clouds of particles or gases occurring throughout interstellar space|
extragalactic nebula, galaxy - (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust; "`extragalactic nebula' is a former name for `galaxy'"
cloud - any collection of particles (e.g., smoke or dust) or gases that is visible