deep space


Definition of deep space 

: 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

All of this means that Hera will benefit our understanding of binary asteroids along with advancing our planetary defense technology while operating in deep space. Avery Thompson, Popular Mechanics, "New Spacecraft Will Head to Binary Asteroid to Help Protect the Planet," 25 June 2018 First launched in 1965, the rocket was initially conceived of as a booster to fly two-person crews around the Moon, as the Soviet Union sought to beat NASA into deep space. Eric Berger, Ars Technica, "Russia’s Proton rocket, which predates Apollo, will finally stop flying," 25 June 2018 For example, the proposal would have the first unmanned flight of the Space Launch System rocket and the Orion spacecraft (both built to transport astronauts to deep space) by 2022, followed by Americans around the moon in 2023. Alex Stuckey, Houston Chronicle, "Revived National Space Council meets Wednesday, the first since Trump released NASA budget," 20 Feb. 2018 At the MMT Observatory in Arizona, scientists aimed captured the burn into deep space in their telescope for some interesting time lapse images. Joe Pappalardo, Popular Mechanics, "Skywatchers Capture the Moment Elon Musk's Tesla Took Off for Deep Space," 7 Feb. 2018 Milstein hopes that StemRad's technology won't just serve to protect first responders here on Earth, but could also help astronauts headed into deep space survive the dangerous radiation outside of the warm embrace of the Earth’s magnetic field. David Grossman, Popular Mechanics, "The Belt That Protects Against Gamma Radiation," 27 June 2018 As New Horizons journeyed through deep space, astronomers found out that its three known moons were accompanied by two more. Marcia Bartusiak, WSJ, "‘Chasing New Horizons’ and ‘Discovering Pluto’ Reviews: Big Lessons From a Tiny World," 11 May 2018 Finally, as early as June 2022, two to four astronauts will fly aboard Orion into lunar orbit, sending humans into deep space for the first time since 1972. Eric Berger, Ars Technica, "NASA’s Orion spacecraft getting closer to finally flying again," 8 May 2018 Get ready to race between planets and deep space, starting with the goings-on on Jupiter. Shannon Stirone, WIRED, "Space Photos of the Week: Scientists Are Seeing Red Over Jupiter’s Spot," 30 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'deep space.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of deep space

circa 1952, in the meaning defined above

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Last Updated

14 Oct 2018

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The first known use of deep space was circa 1952

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