What is the meaning of outer space?

noun

  • Any location outside the Earth's atmosphere.
    • usage: "the astronauts walked in outer space without a tether"; "the first major milestone in space exploration was in 1957, when the USSR's Sputnik 1 orbited the Earth"
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). outer space. Retrieved September 20, 2026, from http://smartdefine.org/outer_space/definitions/1224057
ChicagoWordNet. 2010. "outer space" http://smartdefine.org/outer_space/definitions/1224057 (accessed September 20, 2026).
HarvardWordNet 2010, outer space, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/outer_space/definitions/1224057>.
MLAWordNet. "outer space" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/outer_space/definitions/1224057>