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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.

See Examples For:

But new research suggests that worlds drifting through the darkness of interstellar space could still remain habitable, even without the warmth of a nearby star.

From Science Daily May 29, 2026

“It’s quite reasonable to assume that since humanity has sent spacecraft into interstellar space, other civilizations might do the same thing,” Croft says.

From The Wall Street Journal Apr. 23, 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

"All types of amino acids bond into peptides through the same reaction. It is, therefore, very likely that other peptides naturally form in interstellar space as well," says Hopkinson.

From Science Daily Jan. 21, 2026

By its very nature it would have produced vast quantities of radioactive debris, but for conscientious mission profiles only in the emptiness of interplanetary or interstellar space.

From "Cosmos" by Carl Sagan

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