cosmic dust

American  

noun

Astronomy.

1. fine particles of matter in space.

---

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

---

Etymology

Origin of cosmic dust

First recorded in 1880–85

---

Example Sentences

See Examples For:

cosmic dust

Other factors, including cosmic dust and the masses of galaxies, can influence the light astronomers receive from distant supernovae and therefore affect distance measurements.

From Science Daily ● Oct. 23, 2026

In space, cosmic dust develops under extreme conditions.

From Science Daily ● Jul. 19, 2026

Astronomers identify different types of cosmic dust by studying the infrared light they emit.

From Science Daily ● Jul. 19, 2026

"The star has so little carbon that it suggests an early sprinkling of cosmic dust is responsible for making it," said Ji.

From Science Daily ● Apr. 4, 2026

A second position held by Helmholtz, Lord Kelvin, and others, suggests that minute living creatures may have come to the earth from elsewhere, in the cracks of a meteorite or among cosmic dust.

From The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told by J. Arthur Thomson

Random Word

Spin the wheel and learn a new word!

---