cosmic dust

American  

noun

Astronomy.

1. fine particles of matter in space.

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cosmic dust British  

noun

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

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Etymology

Origin of cosmic dust

First recorded in 1880–85

Example Sentences

The instrument is especially effective at detecting galaxies hidden behind thick clouds of cosmic dust.

From Science Daily

Inside a specially designed chamber, the researchers recreated the harsh environment found in vast clouds of cosmic dust located thousands of light-years from Earth.

From Science Daily

Researchers measure helium-3 to separate cosmic dust from material originating on Earth.

From Science Daily

Most of the emitted light, for example visible light and X-ray, get blocked by thick layers of cosmic dust and can’t pass through the accretion disk around them.

From Space Scoop

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