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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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.
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Aditya Jadhav, Interesting Engineering, 23 May 2026
The mission is a collaboration with Eta Space of Rockledge, Florida, and NASA hopes the technology can evolve to support on-orbit fueling depots for spacecraft designed for long-term deep space objectives.
—Josh Dinner, Space.com, 19 May 2026
Any natural satellites of Psyche could’ve been ejected from the body by ancient impacts—or might’ve even been captured from deep space by chance encounters as the asteroid drifted through the solar system.
—Meghan Bartels, Scientific American, 14 May 2026
The capability is a necessity if Starship is ever to transport humans into deep space, including to Mars – as Musk has long envisioned.
—Eric Lagatta, USA Today, 13 May 2026
See All Example Sentences for deep space
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Aditya Jadhav, Interesting Engineering, 23 May 2026
The mission is a collaboration with Eta Space of Rockledge, Florida, and NASA hopes the technology can evolve to support on-orbit fueling depots for spacecraft designed for long-term deep space objectives.
—Josh Dinner, Space.com, 19 May 2026
Any natural satellites of Psyche could’ve been ejected from the body by ancient impacts—or might’ve even been captured from deep space by chance encounters as the asteroid drifted through the solar system.
—Meghan Bartels, Scientific American, 14 May 2026
The capability is a necessity if Starship is ever to transport humans into deep space, including to Mars – as Musk has long envisioned.
—Eric Lagatta, USA Today, 13 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 27 May. 2026.
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