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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
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
With former military generals publicly expressing alarm over the President’s budget, a solid bi-partisan concern has emerged as China continues to pursue dominance in deep space exploration, orbital weaponization, and lunar colonization with open and tireless ambition.
—Charles Beames, Forbes, 30 Oct. 2024
With its powerful radar, the complex silently tracks deep space objects such as debris and satellites, but, more importantly, is on constant alert for nuclear missile attacks from bad actors.
—Jim Clash, Forbes, 31 Oct. 2024
Then, wait until a gravitational wave from deep space passes by.
—Charlie Wood, Quanta Magazine, 30 Oct. 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 17 Dec. 2024.
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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