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Cosmic Dust
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Definition
: Finely divided solid matter with particle sizes smaller than a micrometeorite, thus with diameters much smaller than a millimeter, moving in interplanetary space. (NASA Thesaurus, 1994)
Other names
Interstellar Dusts; Interplanetary Dusts; Dusts, Interstellar; Dusts, Interplanetary; Dusts, Cosmic; Dust, Interstellar; Dust, Interplanetary; Dust, Cosmic; Cosmic Dusts; Interstellar Dust; Interplanetary Dust