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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But the arduous effort may be essential for achieving longer stays in deep space—as well as building the lunar space station and surface outposts envisioned for future Artemis missions.
—
K. R. Callaway, Scientific American, 5 Feb. 2026
Unlocking neptunium’s secrets Standard solar panels and lithium-ion batteries are often insufficient for the extreme conditions of deep space.
—Mrigakshi Dixit, Interesting Engineering, 4 Feb. 2026
This upcoming mission will send a crew into deep space for the first time in more than five decades.
—Ashley Strickland, CNN Money, 3 Feb. 2026
The chemistry that built life on Earth may have begun in deep space, according to a new study.
—Victoria Corless, Space.com, 28 Jan. 2026
See All Example Sentences for deep space
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K. R. Callaway, Scientific American, 5 Feb. 2026
Unlocking neptunium’s secrets Standard solar panels and lithium-ion batteries are often insufficient for the extreme conditions of deep space.
—Mrigakshi Dixit, Interesting Engineering, 4 Feb. 2026
This upcoming mission will send a crew into deep space for the first time in more than five decades.
—Ashley Strickland, CNN Money, 3 Feb. 2026
The chemistry that built life on Earth may have begun in deep space, according to a new study.
—Victoria Corless, Space.com, 28 Jan. 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 8 Feb. 2026.
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