interstellar space

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

NOUN

deep space

Synonyms

WEAK

celestial spaces cosmic space cosmos intercosmic space intergalactic space interplanetary space metagalactic space ocean of emptiness outer space region beyond Earth's solar system the heavens the universe the void the void above

NOUN

outer space

Synonyms

STRONGEST

cosmos

WEAK

celestial spaces cosmic space deep space empty space ether space infinite space infinity intercosmic space intergalactic space interplanetary space metagalactic space ocean of emptiness pressureless space the heavens the void the void above

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.

The spacecraft, powered by a nuclear energy source, is gradually losing power, and shutting down this instrument is the most effective way to extend the life of humanity's first mission into interstellar space.

From Science Daily • May 4, 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

The grains are not large enough for starlight to push them outward with sufficient force to escape into interstellar space.

From Science Daily • Jan. 12, 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

We sent something about our genes, something about our brains, and something about our libraries to other beings who might sail the sea of interstellar space.

From "Cosmos" by Carl Sagan

interstellar space

Example Sentences

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