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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Glover will become the first Black man to travel to deep space, Koch the first woman and Hansen the first non-American.
—
Richard Tribou, The Orlando Sentinel, 30 May 2026
Putting railguns on the moon isn't a new idea, and was most recently proposed by SpaceX as a means of launching thousands of AI data center satellites into deep space.
—Leonard David, Space.com, 28 May 2026
Cepheid variables could then be used as mile markers in deep space because of their brightness.
—Mike Lynch, Twin Cities, 24 May 2026
Nuclear space propulsion, NASA will launch Space Reactor 1 (SR-1) Freedom to Mars before the end of 2028, demonstrating deep space nuclear electric propulsion.
—Aditya Jadhav, Interesting Engineering, 23 May 2026
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Richard Tribou, The Orlando Sentinel, 30 May 2026
Putting railguns on the moon isn't a new idea, and was most recently proposed by SpaceX as a means of launching thousands of AI data center satellites into deep space.
—Leonard David, Space.com, 28 May 2026
Cepheid variables could then be used as mile markers in deep space because of their brightness.
—Mike Lynch, Twin Cities, 24 May 2026
Nuclear space propulsion, NASA will launch Space Reactor 1 (SR-1) Freedom to Mars before the end of 2028, demonstrating deep space nuclear electric propulsion.
—Aditya Jadhav, Interesting Engineering, 23 May 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 2 Jun. 2026.
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