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
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This chain reaction — a photoelectric feedback loop — produces intense radiation bursts of X-rays and gamma rays that can reach deep space.
—
Mrigakshi Dixit, Interesting Engineering, 6 Mar. 2026
Higher power models like the Fujifilm Fujiinon Techno-Stabi TS-L 1640 were good for observing deep space objects like star clusters, galaxies and nebulas.
—Matt Morris, Space.com, 4 Mar. 2026
The goal is to move from near-Earth orbit to deep space exploration.
—Kurt Knutsson, FOXNews.com, 24 Feb. 2026
With no functional magnetosphere, Mars’ surface radiation is nearly as intense as in deep space, and the paper-thin atmosphere provides little protection from even minuscule meteorites.
—Big Think, 19 Feb. 2026
See All Example Sentences for deep space
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Mrigakshi Dixit, Interesting Engineering, 6 Mar. 2026
Higher power models like the Fujifilm Fujiinon Techno-Stabi TS-L 1640 were good for observing deep space objects like star clusters, galaxies and nebulas.
—Matt Morris, Space.com, 4 Mar. 2026
The goal is to move from near-Earth orbit to deep space exploration.
—Kurt Knutsson, FOXNews.com, 24 Feb. 2026
With no functional magnetosphere, Mars’ surface radiation is nearly as intense as in deep space, and the paper-thin atmosphere provides little protection from even minuscule meteorites.
—Big Think, 19 Feb. 2026
See All Example Sentences for deep space
Cite this Entry
“Deep space.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deep%20space. Accessed 12 Mar. 2026.
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