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interstellar space

American  
[in-ter-stel-er spays] / ˌɪn tərˈstɛl ər ˈspeɪs /

noun

  1. Astronomy. the region of outer space between stars, especially within a galaxy such as the Milky Way.


interstellar space Scientific  
  1. See under space


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

For countless ages, a small chunk of ice and dust traveled alone through interstellar space, like a sealed bottle drifting across a vast cosmic sea.

From Science Daily • Feb. 11, 2026

If you were starting today, going to the moon or anywhere beyond, and especially into interstellar space, would be a job for robots and, often, exclusively robots.

From The Wall Street Journal • Feb. 10, 2026

"We think there's a two-thirds chance this comet is older than the solar system, and that it's been drifting through interstellar space ever since."

From BBC • Jul. 11, 2025

The telescope, with its fellow Maunakea resident the James Clerk Maxwell Telescope, discovered that Earth is basking in light from excited molecules living quietly in interstellar space.

From Los Angeles Times • Aug. 2, 2024

As the solar system condensed out of instellar gas and dust, Jupiter acquired most of the matter that was not ejected into interstellar space and did not fall inward to form the Sun.

From "Cosmos" by Carl Sagan