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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The assault took place on the grottiest of vessels, manned by violent criminals who had been banished into deep space. Justin Chang, The New Yorker, 28 Feb. 2025 New Horizons has long since soared billions of miles into deep space and no other Plutonian missions are currently planned. Jeffrey Kluger, TIME, 18 Feb. 2025 More and more commercial companies and government agencies are launching satellites and missions into orbit and deep space. Tariq Malik, Space.com, 31 Jan. 2025 The recent arrivals will soon commence on Expedition 73 at the space station, helping to maintain the station and performing science experiments mostly designed to lay the groundwork for future missions to the moon and deep space. Eric Lagatta, USA Today, 8 Apr. 2025 See All Example Sentences for deep space

Word History

First Known Use

1865, in the meaning defined above

Time Traveler
The first known use of deep space was in 1865

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Cite this Entry

“Deep space.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deep%20space. Accessed 29 Apr. 2025.

Kids Definition

deep space

noun
: space outside the earth's atmosphere and especially that part lying beyond the earth-moon system
Last Updated: - Updated example sentences
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