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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
Recent Examples on the Web
The sun's outer layers will be cast away into deep space, revealing its pearlescent core.
—Keith Cooper, Space.com, 19 Dec. 2024
Related article SpaceX calls off nail-biting catch attempt as booster splashes down to Earth
The issue relates to how the Orion capsule reenters Earth’s atmosphere upon returning from deep space, said NASA deputy administrator Pam Melroy.
—Jackie Wattles, CNN, 5 Dec. 2024
But even in high orbit, the Space Force is developing a new system called Deep Space Advanced Radar Capability (DARC) for deep space tracking.
—Brad Dress, The Hill, 28 Nov. 2024
What is Voyager 1? Currently located some 15.4 billion miles from our planet, the Voyager 1 spacecraft has been pushing off into deep space since its launch on September 5, 1977.
—Thomas G. Moukawsher, Newsweek, 29 Nov. 2024
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Word History
First Known Use
1865, in the meaning defined above
Dictionary Entries Near deep space
Cite this Entry
“Deep space.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deep%20space. Accessed 1 Jan. 2025.
Kids Definition
deep space
noun
: space outside the earth's atmosphere and especially that part lying beyond the earth-moon system
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