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 would be complemented by a smaller Earth Entry System (EES) based on NASA's Genesis, Stardust, and OSIRIS-REx deep space sample return missions to comets and asteroids.
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New Atlas, 6 July 2025
This telescope can capture great images of deep space objects and even — when used with the Unistellar smart solar filter — the sun!
—Harry Bennett, Space.com, 20 June 2025
All of these missions are predicated on SpaceX mastering routine Starship launch operations, rapid reuse of the ship and booster, and cryogenic refueling in orbit, along with adapting systems such as life support, communications, and deep space navigation for an interplanetary journey.
—ArsTechnica, 19 June 2025
Starship, which was pitched as the world's most powerful rocket, is integral to NASA's Artemis program as well as SpaceX's private plans for deep space travel.
—Theo Burman, MSNBC Newsweek, 19 June 2025
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New Atlas, 6 July 2025
This telescope can capture great images of deep space objects and even — when used with the Unistellar smart solar filter — the sun!
—Harry Bennett, Space.com, 20 June 2025
All of these missions are predicated on SpaceX mastering routine Starship launch operations, rapid reuse of the ship and booster, and cryogenic refueling in orbit, along with adapting systems such as life support, communications, and deep space navigation for an interplanetary journey.
—ArsTechnica, 19 June 2025
Starship, which was pitched as the world's most powerful rocket, is integral to NASA's Artemis program as well as SpaceX's private plans for deep space travel.
—Theo Burman, MSNBC Newsweek, 19 June 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 12 Jul. 2025.
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