cosmic dust

noun

, Astronomy.

1. fine particles of matter in space.

cosmic dust

noun

1. fine particles of solid matter occurring throughout interstellar space and often collecting into clouds of extremely low density See also nebula

Word History and Origins

Origin of cosmic dust¹

First recorded in 1880–85

Example Sentences

One of the most fundamental building blocks in the universe, cosmic dust is a vital ingredient to the growth of a galaxy.

From Science Daily

A second image of the same region, taken at substantially longer infrared wavelengths, is dominated by colder gas and cosmic dust.

From Scientific American

They found that the mass of lithium, aluminum, copper and lead from spacecraft reentry far exceeded those metals found in natural cosmic dust.

From Science Daily

Since cosmic dust is formed from heavy elements like silicon and oxygen, scientists expected the SMC to lack significant amounts of dust.

From Science Daily

The data captures radio emission from cosmic dust in these distant galaxies.

From Science Daily