cosmic dust

noun Astronomy.
fine particles of matter in space.

1880–85 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cosmic dust
See also nebula fine particles of solid matter occurring throughout interstellar space and often collecting into clouds of extremely low density

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Example sentences
The gas circles through space in cosmic dust clouds called nebulae.
Also called cosmic dust or space dust gas: noun: state of matter with no fixed shape that will fill any container uniformly.
They still have a lot of their original components-fine grains, specs of cosmic dust, and little molten droplets.
Start worrying in a few million years about a cosmic dust collision, when the sun hits the closest spiral arm of our galaxy.
Images for cosmic dust
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