Stardust is a type of cosmic dust composed of particles in space. Cosmic dusts are miniature particles, which resemble dust itself. When cosmic dusts form a cloud in space, any light from stars will be refracted and nebulae will be formed. Although called "dust", stardust can refract more light depending on its size due to its refractory minerals.
Usage
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This is an etymology page: a page detailing the origins of terminology used in the series in regards to real world culture and history.