deep space

noun

: space well outside the earth's atmosphere and especially that part lying beyond the earth-moon system

Examples of deep space in a Sentence

Recent Examples on the Web
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The other reveals only the crown of her head, which resembles the Earth emerging from deep space. — Tessa Solomon, ARTnews.com, 12 Nov. 2026 Freed from that control, Ghidorah returns to deep space, once again falling under the thrall of an alien race in 1968's Destroy All Monsters. — Robert Lea, Space.com, 8 Nov. 2026 But big dreams demand big ideas to conquer the immense challenges of deep space travel. — Mrigakshi Dixit, Interesting Engineering, 7 Nov. 2026 Earth is embroiled in a seemingly endless conflict against alien bugs from deep space. — K. Thor Jensen, PC Magazine, 26 Oct. 2026 See All Example Sentences for deep space

Word History

First Known Use

1865, in the meaning defined above

Time Traveler
The first known use of deep space was in 1865

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Cite this Entry

“Deep space.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deep%20space. Accessed 15 Nov. 2026.

Kids Definition

deep space

noun
: space outside the earth's atmosphere and especially that part lying beyond the earth-moon system
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