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

Lockheed Martin, which is manufacturing the Orion spacecraft for NASA's deep space missions, plans to study whether some commercial payloads could fly along for the ride toward the Moon. Eric Berger, Ars Technica, "The Orion spacecraft may carry more than NASA missions to the Moon," 4 Oct. 2018 And while all other partners in the ISS project are now actively working on the next step after ISS–the habitable outpost in the lunar orbit, conceived as a gateway into deep space including asteroids and Mars—Russia has taken a minor role. Anatoly Zak, Popular Mechanics, "Russia Is Riled Up About Being Left Behind in Space," 10 Oct. 2018 In addition to developing new technologies, these types of studies are essential for the future of space travel — as scientists continue to figure out the most efficient ways to keep spacecrafts running on deep space voyages. Fox News, "Scientists invent way to create 'unlimited renewable energy'," 7 Sep. 2018 The varied trunk sizes imply deep space, but also read as a fence-like barrier. Karen Wilkin, WSJ, "‘Jennifer Steinkamp: Blind Eye’ Review: Exploring the Digital Landscape," 20 Aug. 2018 But in 2016, critics claimed that what appears to be light propulsion of graphene sponges may actually be an effect of the experiment’s highly controlled environment that’s not reproducible in the vacuum of deep space. Gemma Tarlach, Discover Magazine, "20 Things You Didn't Know About ... Graphene," 13 Aug. 2018 But none of these tiny craft had ever ventured into deep space until the twin MarCO spacecraft did. Mike Wall,, "Tiny, Mars-Bound Satellite Snaps Its First Image of Earth and the Moon," 16 May 2018 Eventually, Airbus officials think that artificial intelligence could be helpful on deep space exploration missions to the moon, or Mars. Christian Davenport,, "SpaceX sends AI robot named CIMON to the International Space Station," 29 June 2018 The international team of researchers used data from the Sloan Digital Sky Survey to study deep space at different distances, measuring the rate of expansion of the universe up to billions of years in the past. Avery Thompson, Popular Mechanics, "Researchers Discover Possible Clue to Identity of Dark Energy," 4 Oct. 2017

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

9 Dec 2018

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Time Traveler for deep space

The first known use of deep space was circa 1952

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