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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The mission will send four astronauts on a roughly 10-day journey around the moon to evaluate how the Orion spacecraft’s various systems and hardware function in a deep space environment.
—
Marlene Lenthang, NBC news, 1 Jan. 2026
This is very useful for stargazers without telescopes who want to observe deep space objects that require powerful magnification, like star clusters, nebulas and galaxies.
—Harry Bennett, Space.com, 1 Jan. 2026
But returning to deep space after a more than five-decade hiatus is not without its challenges.
—Jackie Wattles, CNN Money, 31 Dec. 2025
Robert Pattinson plays a young down-on-his-luck kid who is hellbent on getting passage on a deep space vessel that is searching for a way to make a new planet habitable.
—Anastasia Sanger, Glamour, 22 Dec. 2025
See All Example Sentences for deep space
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Marlene Lenthang, NBC news, 1 Jan. 2026
This is very useful for stargazers without telescopes who want to observe deep space objects that require powerful magnification, like star clusters, nebulas and galaxies.
—Harry Bennett, Space.com, 1 Jan. 2026
But returning to deep space after a more than five-decade hiatus is not without its challenges.
—Jackie Wattles, CNN Money, 31 Dec. 2025
Robert Pattinson plays a young down-on-his-luck kid who is hellbent on getting passage on a deep space vessel that is searching for a way to make a new planet habitable.
—Anastasia Sanger, Glamour, 22 Dec. 2025
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 9 Jan. 2026.
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