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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In a study, the team describes how cooling a gas of radioactive atoms to temperatures colder than deep space could synchronize their radioactive decay.
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Neetika Walter, Interesting Engineering, 9 Sep. 2025
Scientists have developed a more efficient way to generate oxygen for astronauts that could help with future missions into deep space.
—Andrew Jones, Space.com, 2 Sep. 2025
To maintain contact with space probes, the radio signals sent back and forth between Earth and deep space contain special ranging codes, which act as a kind of measuring tape or ruler.
—IEEE Spectrum, 25 Aug. 2025
The company has yet to successfully complete a mission for the the stainless-steel spacecraft, which is being engineered to be fully reusable and would be able to carry up to 100 people to deep space destinations.
—Matthew Glasser, ABC News, 24 Aug. 2025
See All Example Sentences for deep space
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Neetika Walter, Interesting Engineering, 9 Sep. 2025
Scientists have developed a more efficient way to generate oxygen for astronauts that could help with future missions into deep space.
—Andrew Jones, Space.com, 2 Sep. 2025
To maintain contact with space probes, the radio signals sent back and forth between Earth and deep space contain special ranging codes, which act as a kind of measuring tape or ruler.
—IEEE Spectrum, 25 Aug. 2025
The company has yet to successfully complete a mission for the the stainless-steel spacecraft, which is being engineered to be fully reusable and would be able to carry up to 100 people to deep space destinations.
—Matthew Glasser, ABC News, 24 Aug. 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 9 Sep. 2025.
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